Best Class Scheduling Software: The 10-Point Feature Checklist, And 10 Platforms Scored Against It

If you are a studio owner shopping for scheduling software, you will probably start with a list of approximately thirty features and finish the year using around six of them. The other twenty-four were demo material and nothing more.

The features that decide whether a platform survives contact with a real timetable are a much shorter list, and they are fairly specific:

whether the software can repeat a class every Tuesday without you rebuilding it each week,

whether it can cap the room at twelve places,

whether it can sell a ten-class pass and then count down from that pass correctly,

and whether it can fill the seat when somebody cancels at 6pm the night before.

What follows is a buyer’s checklist for class scheduling software, written out feature by feature, and then ten platforms scored against the same ten points.

Pricing and at least one real limitation are included for every platform on the list, including the platforms we rate most highly.

How We Built This Checklist

We started with the questions that studio buyers actually type into a search box, and then worked backwards to the features those questions imply.

The ten points below came out of several inputs.

The first was the set of criteria that recur across the class scheduling roundups currently ranking.

The second was the capability grids that the vendors publish about themselves.

The third input, and in practice the most useful one, was the complaint pattern in verified review data on Capterra, because that is usually where the gap between the feature grid and the actual software becomes visible.

Ratings quoted in each entry are the overall scores published on Capterra at the time of writing, and we have included the review count alongside each score, because a 4.8 average drawn from twenty-six reviewers and a 4.8 average drawn from five thousand reviewers are not the same claim.

Pricing is the published list price for the class or course product rather than a negotiated rate. Every platform included here sells class scheduling as a core product rather than as an afterthought attached to an appointment book, with two deliberate exceptions that we flag inside their own entries.

One thing is worth saying up front, because it affects how you should read any feature grid, including this one. A marketing lead at one booking platform told us that the recurring problem with outsourced content was that writers “talk about features we don’t have,” which then produces support tickets from customers who read the page and expected the feature to exist.

Vendor feature lists are aspirational more often than anyone in the category admits. Treat every row below as a question to ask during a trial rather than as a fact you can rely on.

What Class Scheduling Software Has To Do

Below are ten features, each with a short definition and the reason it earns a place on the list. The first six are must-haves for any studio taking more than a handful of bookings in a week.

The last four are the features that tend to separate a platform you will still be running in three years from one you will end up migrating away from.

The Six Must-Haves

Recurring class scheduling. This is a weekly repeating timetable that you build once and then edit in one place. If changing the Wednesday 7 pm slot requires editing fifty-two individual calendar events, then the software has failed the first test.

You should also look for the ability to change a single occurrence without breaking the rest of the series, because in practice you will cancel one class for a public holiday long before you cancel a whole series.

Capacity limits and waitlists. This means a hard cap on the number of people who can be in a slot, together with an automatic queue that promotes the next person when a place opens up.

Two numbers matter here, and most buyers only check the first of them: the maximum per time slot, and the maximum per individual booking.

A parent booking three children into a twelve-place class is one booking and three seats. Software that only understands the first number will eventually oversell you.

Memberships, packages and drop-ins. These are the ways that studios sell access to a class. A membership is a recurring subscription, a package is a prepaid block of classes that counts down as they are used, and a drop-in is a single paid seat. Almost every platform in this category claims to support all of them.

Rather fewer of them handle the awkward cases well, for example, a member who is also buying a one-off workshop, or a class pass that expires partway through a course.

Online self-booking. This is a public page or an embedded widget where students book and pay for themselves, at any hour, without emailing you first. Two details are worth checking.

The first is whether the booking flow keeps students on your own website or sends them into a pop-up window on somebody else’s domain, because the second option tends to cost conversions and looks less professional.

The second detail is whether the page is usable by people who navigate with a screen reader or with a keyboard alone, since federal guidance on web accessibility points businesses towards the published Web Content Accessibility Guidelines rather than towards any particular vendor feature, and a public booking page is exactly the sort of content it covers.

Automated reminders. These are email and text messages that go out before a class without anybody having to press send.

Automated reminders are the most commonly cited defence against no-shows, although the reduction figures quoted around the industry vary so widely (anywhere from approximately a third to approximately ninety percent, depending on which blog post you are reading) that we would not put any weight on a specific number.

What is not in dispute is that the messages need to be automatic and that you need to be able to configure how far in advance they are sent.

Payments and deposits. This means taking money at the point of booking, whether that is the full price, a deposit, or a card held on file against a late cancellation.

You should check which payment gateways the platform supports, and in particular whether you are forced onto the platform’s own processor, because that decision is very difficult to reverse once you have a year of transaction history sitting inside it.

The Four That Separate Good From Adequate

Multi-instructor and multi-room scheduling. This means assigning both a teacher and a physical space to a class, and having the system refuse to double-book either of them.

A studio with two rooms and five teachers has a resource allocation problem rather than a calendar problem, and generic schedulers usually only model the teacher.

Class check-in and attendance. This is a record of who actually turned up, taken at the door rather than reconstructed afterwards from memory.

Attendance data is what makes retention reporting possible at all, and it is also what tells you whether a class is genuinely full or simply heavily booked by people who never arrive.

Website integration. This means booking that lives on your own domain, either through an embedded widget or through a branded page that you control.

It matters more than it sounds. Every booking that happens on a third-party marketplace page is a booking whose customer relationship you do not fully own.

Reporting. This covers attendance rates, revenue by class type, membership churn and instructor utilisation. Reporting is the feature that buyers care least about during a trial and complain about most in the second year.

Judging by the review data across this category, it is also the most consistently disappointing part of otherwise good software.

Memberships, Class Packs And Drop-Ins: The Pricing Model Question

This is the part of the checklist where the platforms separate most visibly, so it is worth treating separately.

A drop-in is straightforward, since it is one person booking one class and making one payment. Class packs are where the accounting actually starts.

A ten-class pass has to decrement on attendance rather than on booking, because otherwise a student who books and then cancels within the permitted window loses a credit that they should still have.

The pass also has to carry an expiry rule that you can set yourself, and the remaining balance has to be visible to the student without them emailing you to ask how many classes they have left. Several platforms in this category get the selling part right and the counting part wrong.

Memberships add recurring billing, which in turn adds failed payments, which in turn adds dunning.

It is worth asking what happens when a card declines on the third of the month:

whether the member automatically loses access to the members-only Tuesday class,

whether the system retries the payment,

and whether anybody is told about it.

It is also worth asking whether members can be given a different price for the same class rather than being pointed at a separate class listing, because maintaining two parallel timetables for the same session is a mistake that studios generally only make once.

The awkward middle case is the course. A six-week beginners’ series is neither a recurring class nor a workshop. It is a fixed cohort with a start date, and the questions that follow from that are quite specific.

Can somebody enrol in week three and pay a prorated rate?

Can a student who missed week two attend the equivalent session in the next cohort?

Can you set a prerequisite so that people do not book the intermediate course by accident?

Course-shaped businesses, and there are more of them under the class scheduling heading than most roundups acknowledge, should treat late enrolment and make-up sessions as must-haves rather than as extras.

It is worth noting on the buyer side that the people searching for the best scheduling software for classes are not all yoga and pilates studios.

A large and growing share of them run certification courses, CPR and first aid in particular, where the cohort is fixed, the certificate matters, and the prerequisite logic is not optional. Their checklist and the checklist of a boutique fitness studio overlap by perhaps sixty percent.

Advanced: Multi-Room And Capacity Optimization

Once you are running more than approximately twenty classes a week across more than one space, scheduling stops being a calendar exercise. The constraint is no longer time; it is the combination of teacher, room and equipment.

Resource-aware scheduling means that the platform models the room as a bookable object with its own availability, so that a class cannot be scheduled into a space that is already occupied, and so that a room closed for maintenance takes its classes with it.

A small number of platforms go further than this and will suggest or automatically assign a room based on class size and availability. That capability is genuinely useful at scale and genuinely irrelevant below it. If you have one studio room, you can ignore this section entirely.

Group capacity has a second layer that is easy to miss. Some platforms tie capacity to staff count, so that a class with two instructors automatically holds twice as many students.

That behaviour is helpful for a swim school and unhelpful for a yoga studio where the mat count rather than the teacher count is the real limit. Check which model the platform uses before you assume it matches your room.

The Ten Platforms At A Glance

The 10 Platforms, Scored Against The Checklist

1. Bookeo

There is a maximum-per-slot cap and a separate maximum-per-booking cap, supporting up to 500 participants in a single slot.

The second cap is what prevents a family booking four seats into a class that only has three left. Late enrolment, make-up classes and drop-ins are treated as distinct cases rather than as workarounds.

Best for: Studios and course providers who need memberships, prepaid class packs and waitlists without a percentage of revenue coming off the top.

Checklist strengths:

• Recurring classes, multi-day courses, one-off workshops and private lessons in one schedule
• Dual capacity limits per slot and per booking, plus waiting lists with automatic notification
• Memberships with recurring payments, prepaid class packs and gift vouchers
• Embedded booking widget, plus calendar sync to Google Calendar, iCal, Outlook and Office 365

Rating: 4.3 out of 5 on Capterra across 103 reviews.

Pricing: Five monthly tiers, from $14.95 for Solo up to $119.95 for X-Large, set by teacher and room count, staff logins and booking volume (the $39.95 Standard plan covers 20 teachers and rooms and 1,000 bookings a month).

Thirty-day free trial, no credit card, a thirty-day money-back guarantee, and no commission. Digital waivers are a paid add-on at $9 to $249 a month by volume.

Where it falls short: The interface shows its age, and reviewers say so bluntly, with more than one of them describing it as dated compared to newer competitors.

Support is email only, with no phone line, which is a real constraint if something breaks fifteen minutes before a class.

The tier ladder also counts teachers and rooms against the same limit, so a studio with several rooms climbs the pricing tiers faster than its headcount alone would suggest.

2. Bookwhen

If your requirement is a clean weekly timetable that students can book in two clicks, then this is probably the shortest path to it.

Setup is genuinely fast, and the 4.9 average rating reflects a product that does a defined job without asking a great deal of the person configuring it.

The trade-off is that the checklist items further down the list, meaning memberships, waiting lists and attendance tracking, sit on the higher plans rather than being available throughout.

Best for: Small studios, community classes and instructors running a straightforward repeating schedule.

Checklist strengths:

• Simple recurring timetable with a public booking page that is quick to set up and quick for students to use
• Class passes and discount codes, with no cut taken on payments beyond the gateway’s own fee
• Waiting lists and attendance tracking on the upper tiers
• Zoom and Google Calendar integration for studios running hybrid or online sessions

Rating: 4.9 out of 5 on Capterra across 179 reviews.

Pricing: Free plan covering 50 bookings a month for free events only, then Lite at $16 a month for 300 bookings, Standard at $29 for 800, and Plus at $59 for 1,800, with an enterprise tier on request. Two-week free trial, no credit card, and no minimum term.

Where it falls short: Plans are capped by monthly booking volume rather than by feature alone, so a busy term can push you into an upgrade part way through a month.

Reviewers also flag limited customisation on the booking page appearance and filters, and several of them note that switching a student between classes is more awkward than it ought to be.

3. ClassFit

The pricing model here is the first thing to understand, because it is unusual. You pay two percent of the revenue you process, with a floor of $45 a month and a hard ceiling of $120 a month.

Above roughly $6,000 a month in processed revenue you stop paying any more, which makes this one of the cheapest options on the list for a growing studio and one of the more expensive options for a very quiet one.

Best for: Small fitness, yoga and wellness studios that want the full checklist without per-feature plan gating.

Checklist strengths:

• Unlimited classes and bookings on every account, with no per-class or per-staff limits
• Packages, memberships, waitlists, intake forms and waivers included rather than tiered
• Discount codes and website embedding, plus Zoom for online classes
• Thirty-day free trial with no credit card required

Rating: 4.8 out of 5 on Capterra, although across only 26 reviews, which is a much thinner evidence base than the score alone suggests.

Pricing: Two percent of monthly revenue processed through the platform, minimum $45 a month, maximum $120 a month. Stripe fees are separate. Registered charities running free public classes are given free accounts.

Where it falls short: Feature depth is thinner than it is on the established platforms, which the vendor is fairly open about and which reviewers echo.

Notification behaviour is deliberately restrained, and at least one reviewer wanted class pass balances to be easier for clients to see. The $45 floor also means that a studio running four classes a week is paying a rate that assumes rather more volume than it has.

4. Teachworks

This platform is aimed at education businesses rather than at studios, and the difference is visible in the billing model. You pay a base fee plus a charge per student lesson, so a group class of eight students costs eight lesson units.

That is either the fairest pricing on this list or the least predictable, depending almost entirely on whether your classes are small and frequent or large and occasional.

Best for: Tutoring centres, music schools and lesson-based education businesses with recurring students.

Checklist strengths:

• Lesson and course scheduling built around repeat series, cohorts and terms rather than one-off slots
• Unlimited students, teachers and user accounts on every plan, so growth does not trigger a seat upgrade
• Invoicing, teacher payroll and branded portals for students and parents
• Twenty-one-day free trial, and cancelled lessons do not count towards the bill

Rating: 4.6 out of 5 on Capterra across 64 reviews.

Pricing: Starter at $16.49 a month plus $0.32 per student lesson, Growth at $47.99 plus $0.189, and Premium at $187.99 plus $0.065 with the first five branch accounts included. Billing happens in arrears based on actual usage.

Where it falls short: There is no two-way sync with Google Calendar, which the company has said is coming but which is a meaningful gap for a scheduling product.

Support is email only, with no phone or chat option. Several reviewers describe a steep onboarding curve, and a few of them paid for outside help to get set up.

5. Arlo

If you picture a first-aid training provider running a two-day certified course with twelve seats, a prerequisite, a waitlist, and a certificate that has to be issued and tracked afterwards, that is the shape this platform was built around, and it handles that shape better than anything else on this list. It is also priced for it, in a way that penalises the opposite use case.

Best for: Certification bodies, professional training providers and anyone running multi-session courses that end in a credential.

Checklist strengths:

• Multi-session course scheduling with waitlists, custom registration rules and prerequisite handling
• Automated certificates, customer portals and organisation portals for corporate bookers
• Website integration that publishes a live course list on your own domain
• Email automation, built-in CRM and reporting across the course catalogue

Rating: 4.7 out of 5 on Capterra across 147 reviews.

Pricing: Capterra lists a starting price of $105 a month on the usage-based Simple plan, while the vendor’s own pricing page shows Simple at $132 a month per administrator licence, rising to roughly $302 for the enterprise tier.

On top of the subscription there is a per-registration charge of $2.15 for paid registrations and $1.07 for free ones. Fourteen-day trial.

Where it falls short: The per-registration fee is the problem for studio-style businesses. At $2.15 a head, a drop-in class priced at $15 gives up a meaningful slice of the ticket, and a high-volume weekly timetable will feel that quite quickly.

Reviewers also cite limited storefront customisation, restricted API functionality and weaker North American integrations.

6. Pike13

Attendance is the feature to focus on here. Check-in through a kiosk, client and staff apps, and recurring plans that tie a membership to actual visits make this a reasonable fit for businesses where showing up is effectively the product, including swim schools, martial arts clubs, children’s programmes and multi-location studios.

The scheduling itself is competent rather than remarkable, and the operational layer around it is the actual reason to consider the platform.

Best for: Multi-location studios, swim schools and activity businesses that need attendance and membership data in one place.

Checklist strengths:

• Class, course and appointment scheduling with recurring plans, passes and punch cards
• Attendance tracking with kiosk check-in, plus client and staff mobile apps
• Automated reminders and multi-location reporting
• Branded client site and communication tools, with a branded mobile app on the top tier

Rating: 4.1 out of 5 on Capterra across 140 reviews.

Pricing: Essential at $139 a month, Advanced at $195, Premium at $249. The pricing is flat rate rather than per user. There is a free trial and no free version.

Where it falls short: Reporting is the recurring complaint, described by reviewers as cumbersome, slow and difficult to customise, which is awkward for a platform whose main advantage is the data it collects.

Some users report slowdowns and errors during busy periods. The $139 entry price is also difficult to justify for a single-room studio running a dozen classes a week.

7. Omnify

The subscription is only part of the cost here, and that is worth understanding before you compare this platform with anything else on the list.

Every plan carries a transaction fee on top of the monthly price, and the fee falls as the subscription price rises, from five percent on the free plan to two percent at $99, one percent at $249 and half a percent above that.

For a studio processing real volume, the effective cost is nothing like the headline number.

Best for: Studios and community facilities that rent out space alongside running classes.

Checklist strengths:

• Classes, class packs, appointments and events in one booking layer, with unlimited bookings even on the free plan
• Facility and facility-rental booking, which is genuinely uncommon in this category
• Client portal, check-in and profile management
• Automated confirmations and reminders, plus multi-location support

Rating: 4.4 out of 5 on Capterra across 100 reviews.

Pricing: Free Forever at $0 with up to 2 team members and 5% transaction fees, Growth Pro at $99 a month ($79 billed annually) with 2%, Accelerate Pro at $249 ($199 annually) with 1%, and Scale Pro from $599 ($499 annually) with 0.5%. Seven-day free trial on the paid plans.

Where it falls short: Memberships sit on the $249 tier, which is a long way up for a feature that most studios treat as core.

The percentage fee compounds that problem, since a studio taking $8,000 a month on the Growth plan is paying $160 in transaction fees on top of the $99 subscription.

Reviewers also report that setting up a recurring class across different weekdays is fiddlier than it should be, and that reporting exports sometimes come back with no rows in them.

8. SimplyBook.me

The model here is modular. You start with a fairly plain booking system and then switch on the capabilities you need from a long menu of custom features, with each plan allowing a certain number of them to be enabled.

That approach suits buyers who know exactly which of the ten checklist points they care about and resent paying for the other seven. It suits nobody who would prefer the software to be opinionated on their behalf.

Best for: Buyers who want to assemble a booking system feature by feature and are comfortable configuring it.

Checklist strengths:

• Class and group scheduling with a customisable booking widget for your own site
• Memberships, packages and class passes available as switchable modules
• Multi-location support and a large integration list
• Automated confirmations and reminders across email and SMS

Rating: 4.6 out of 5 on Capterra across 1,286 reviews, one of the largest review bases in this comparison.

Pricing: From about EUR 9.90 a month on the Basic plan, which includes 100 bookings. Higher plans raise the included booking count and the number of custom features you can enable. A free tier exists with tighter limits.

Where it falls short: The included-bookings cap is the thing that catches studios out, because class businesses generate booking counts far faster than appointment businesses do. Reviewers describe the initial configuration as overwhelming given the number of options available, and payment setup as inflexible.

The modular approach also means that a feature you assumed was standard may turn out to be one of the switches you never enabled.

9. Acuity Scheduling

Ubiquity is the argument for this one. Nearly six thousand reviews and a 4.8 average is a substantial amount of evidence that the software works and that people enjoy using it, and if your business is mostly one-to-one appointments with a few group sessions attached, it is a sensible default choice.

We have placed it low on this list on grounds of fit rather than quality, because the further your business sits towards courses and cohorts, the harder the product has to be persuaded.

Best for: Appointment-led businesses, from personal trainers to therapists, that also run occasional group classes.

Checklist strengths:

• Group class scheduling alongside individual appointments, with packages and subscriptions on the higher plans
• Customisable intake forms and a client database
• Payment processing through Stripe, Square or PayPal
• Calendar sync and a large integration list, including Google Calendar, Outlook and Zoom

Rating: 4.8 out of 5 on Capterra across 5,754 reviews.

Pricing: From $20 a month on the Starter plan, with class and package features arriving on the higher tiers.

Where it falls short: An eight-week course with late enrolment, make-up sessions, and a prerequisite is not the shape this product was designed around, and configuring one is more effort than it is worth.

Reviewers also flag a mobile app that lags behind the desktop experience, limited reporting, and a reliance on third-party tools such as Zapier for anything approaching custom automation.

10. Mindbody

The best-known name in studio software appears on very nearly every roundup in this category, which is precisely why it sits last here rather than first. It is a large and capable platform with a consumer marketplace attached, and for a studio that wants to be discovered by people browsing an app rather than searching for the studio by name, that marketplace is a real asset.

The rest of the picture is more mixed than the platform’s market share would imply.

Best for: Larger studios and multi-location businesses that want client discovery through a consumer marketplace.

Checklist strengths:

• Full class scheduling with room and resource management on the mid tier and above
• Memberships, contracts, promo codes, and a pick-a-spot feature for reserved places
• Marketing tools, sales pipeline management, and detailed reporting on the top tier
• Consumer app listing that puts your timetable in front of people who are not looking for you specifically

Rating: 4.0 out of 5 on Capterra across 2,993 reviews, the lowest score in this comparison and drawn from one of the largest samples.

Pricing: Starter is listed at $79 a month. The Accelerate and Ultimate tiers are quote-only, so the two plans that carry room and resource management, analytics, and marketing are not published.

Where it falls short: Two of the three tiers being quote-only makes genuine comparison impossible before you talk to a salesperson, which is a meaningful problem when you are trying to score platforms against a checklist.

Reviewers describe onboarding running as long as eight weeks and call the scheduling interface unnecessarily complex for daily use. Long-term users are noticeably more positive than recent ones, which is a pattern worth reading carefully.

How To Score A Platform Against This Checklist

If you want to compare properly, print the ten points, take three platforms into trials, and run the same five tests on each of them. This takes an afternoon, and it saves a migration.

The first test is to build a real week. Not a demo week, but your actual Tuesday. Set up the recurring class, cap the room at your real number, and then change one occurrence of it. How long that takes will tell you most of what you need to know.

The second test is to sell yourself a ten-class pass and then use one class from it. Watch whether the credit comes off at the point of booking or at the point of attendance, and whether the student can see the remaining balance without having to ask you.

Then cancel a booking inside your own cancellation window and check that the credit comes back.

The third test is to fill a class to capacity and then add an eleventh person. Waitlist behaviour is what you are looking at: whether the next person is promoted automatically, whether they are told about it, and how long they have to confirm before the place passes to the person behind them.

The fourth test is to ask about money rules rather than about features. In our experience, the arguments during a software selection are rarely about the calendar; they are about deposits, cancellation windows, and what happens to a no-show.

In one of the conversations behind this article, no-show protection and deposit handling was called “a tricky question” that needed the operator’s own input, and that is exactly right. The software can enforce whatever policy you set, but it cannot decide the policy for you, and the platforms differ quite a lot in which policies they can express at all.

The fifth test is to ask a security question and see whether you get a straight answer. Class software holds student names, contact details, payment tokens, and in many cases health information collected on an intake form.

Ask whether the vendor can point to an audited certification against the information security management standard or to an equivalent independent assessment, rather than to a marketing page that promises encryption. A vendor that answers precisely is telling you something about how it operates more generally.

The Bottom Line

The ten-point checklist is more useful than any ranked list, including this one, because your weighting is not the same as ours. A tutoring centre should care about the course logistics and can ignore the marketplace question entirely. A boutique studio with a single room should ignore resource scheduling and spend its attention on class packs and waitlists instead.

What every studio should refuse to compromise on is the first six items: recurring classes, real capacity limits with a working waitlist, three ways to sell access, self-service booking on your own domain, automatic reminders, and payments that you control.

If you are shortlisting class scheduling software and your list is dominated by weekly timetables, prepaid class packs, memberships and a waitlist that actually fills the seat, then Bookeo is built around that exact set of problems, and because the fee is a flat monthly subscription, the cost does not climb as the number of bookings you take goes up.

Whichever platform you choose, run the five tests above before you migrate anything across. The platform that survives your real Tuesday is the right answer.

Frequently Asked Questions

What features does a studio actually need in class scheduling software?

There are six at minimum: recurring class scheduling that you can edit in one place, capacity limits with an automatic waitlist, support for memberships and prepaid packs as well as drop-ins, an online booking page that students can use themselves, automated email and text reminders, and payments taken at the point of booking. Everything else on a feature grid is useful but negotiable.

What is the most important single feature for filling classes?

The waitlist, followed fairly closely by reminders. A capacity cap without a waitlist simply tells people no.

A waitlist that automatically promotes the next person when somebody cancels turns a lost seat into a filled one, which is the difference between a class running at nine out of twelve and a class running full.

Do I need multi-instructor and multi-room scheduling?

Only if you have more than one of either. With a single room and a single teacher, resource scheduling adds configuration work and solves nothing.

With two rooms and five teachers it stops being optional, because the software needs to understand that the room is a constraint independent of the person teaching in it.

How much should class scheduling software cost?

Published entry prices in this comparison run from free up to $139 a month, and most of the usable plans land somewhere between $20 and $80. The number to compare is not the subscription on its own.

It is the subscription plus any per-booking or per-registration charge plus any percentage of revenue, calculated at your actual monthly volume. Two platforms with the same headline price can differ by several hundred dollars a month once those extras are added.

Do automated reminder texts count as marketing?

A confirmation or a reminder for a class that the student has already booked is a service message.

A text promoting Tuesday’s half-empty class to your whole list is marketing, and the UK regulator’s rules on marketing by electronic mail require that people have specifically consented before you send it.

Check that your platform lets you separate the two message types and record consent against a student record.

Can one platform handle both weekly classes and multi-week courses?

Several can, although fewer than claim to. The test is late enrolment and make-up sessions.

If a student can join in week three at a prorated price, and if somebody who missed a session can attend the equivalent class in another cohort without you rebuilding the booking by hand, then the platform genuinely supports courses. If not, it supports repeating classes and is calling them courses.