Updated 2026-07-28

A class and membership app for your gym — built by AI

Describe how you train — classes, 1-on-1 sessions, memberships — and Mortar builds the app: members book online, pay by card, and you see everyone on one list instead of a paper diary.

Built for how you train

✓A class schedule with capacity limits — spots close automatically when a session fills up.
✓Clients book classes or 1-on-1 sessions online and get an email confirmation from your own domain.
✓Sell monthly memberships billed by card, with members-only pages for programs and schedules.
✓Payments without the paperwork: your own Stripe account, or Payments via Mortar sets one up for you (3% fee).
✓A client list you actually own — contact details, bookings and payment history in one place, exportable anytime.
✓Runs at your own domain, hosted 24/7 from $6/mo — no tech to maintain.

Frequently asked

Can I charge a recurring membership?

Yes — memberships are billed by card on a schedule through Stripe, and members-only pages unlock for active members automatically.

I train clients solo — is this overkill?

No. Describe exactly what you offer — even just “book a session with me” — and the app is only that. Add classes or memberships later by asking.

Build a real Django app you own

Describe it in plain English. Preview, edit, and export the full source — no lock-in.

Start building