Many tools you rent monthly are simple apps underneath: bookings, loyalty, menus, sign-ups.
A business collects subscriptions the way a coat collects lint. Bookings, a loyalty card, a sign-up form, a payment link. Each one is small, each one goes up, and none of them is yours. Stop paying and the tool, and often your customer list, is gone.
Underneath, many of these tools are simple apps. You can own one: the code, the contract and the name on it are handed to you, and nobody can raise your rent.
Every app has a live demo, so you can try it before you pay, and your payment sits in escrow until the app is delivered and working.