FitLab vs Trainerize, Acuity and Calendly
Which app is better for a fitness trainer or club? A short answer, an honest table, and answers to the most common questions.
The short answer
If you are a fitness trainer or club, FitLab is built exactly for your work: online bookings, subscriptions and training packages, online payments, substitute trainers during vacations, and a club layer with halls, memberships and POS sales. Calendly and Acuity are general-purpose appointment schedulers, and Trainerize focuses on online coaching with workout programs.
An honest note: if your main business is selling remote workout and nutrition programs, Trainerize is strong in that niche. FitLab is the better choice when you run real training sessions with a schedule, subscriptions and payments.
Comparison table
Verifiable facts only — no opinions. The comparison is based on publicly available information from each product's website.
| Feature | FitLab | Trainerize | Acuity Scheduling | Calendly |
|---|---|---|---|---|
| Primary focus | Fitness trainers and clubs | Online coaching and workout programs | General appointment scheduling | General meeting scheduling |
| Local card payments (myPOS, Borica) | Yes, plus Stripe | No | No | No |
| Club layer: halls, memberships, scanner check-in, POS sales | Yes | Partially (studio features, no POS for Bulgaria) | No | No |
| Substitute trainers during vacations, without cancelling bookings | Yes | No | No | No |
| Interface in Bulgarian (15 languages in total) | Yes | No Bulgarian | No Bulgarian | No Bulgarian |
| Client app with no app-store download (PWA) | Yes, free for clients | Mobile app from an app store | Booking web page | Booking web page |
Information about Trainerize, Acuity Scheduling and Calendly reflects their public websites as of July 2026 and may change. All names and trademarks belong to their respective owners.
Frequently asked questions
FitLab or Trainerize — which is better for a fitness trainer?
It depends on your work. Trainerize is strong for online coaching — selling workout programs and tracking clients remotely. FitLab is the better choice when you run real training sessions: a booking schedule, subscriptions and packages, online payments, and substitute trainers during vacations.
Is FitLab better than Calendly or Acuity Scheduling for trainers?
Calendly and Acuity are general-purpose appointment schedulers and do that well. FitLab adds what a fitness business specifically needs: subscriptions and training packages, gift vouchers, substitute trainers, progress tracking, and a full club layer with halls, memberships and POS sales.
Can I switch to FitLab from another system?
Yes. You register for the free trial period, enter your schedule, packages and clients, and share your new booking link. There is no binding contract — and your clients use FitLab for free.
Get started with FitLab
Signing up is free, and setting up your schedule takes just a few minutes.
Sign up as a trainer