








Explore what it takes to build a product like AppyBee – from architecture to integrations and timelines.
A fitness booking system requires a real-time scheduling engine, flexible subscription logic (memberships, class packs, trials), payment gateway integration with local providers (iDEAL, Bancontact, SEPA), QR code access control, and separate interfaces for staff and members. We built all of this for AppyBee, saving owners 10–15 hours/week.
Absolutely. AppyBee supports one-time visits, time-based continuous memberships, prepaid class packs (strip cards), and trial sessions. Each model has its own billing rules, pause/resume logic, and automatic overdue follow-up — fully configurable per gym.
Subscriptions can be paused by staff or members and resume automatically after a configurable period based on business rules. The system handles all edge cases — partial periods, mid-cycle pauses, and reactivation billing — without any manual work.
AppyBee uses React.js and TypeScript on the frontend, React Native for cross-platform mobile apps, PHP and Node.js with microservice architecture on the backend, Socket.io for real-time notifications, and AWS for hosting. Payment processing integrates iDEAL, Pay.nl, Pay.pro, and Bancontact.
AppyBee is built for gyms, fitness studios, martial arts schools, boxing clubs, yoga studios, and personal trainers who want to automate bookings, payments, and member management. It’s especially popular in the Netherlands, with support for Dutch, English, and German.
A focused MVP with core booking and payment features can launch in 3–4 months. A full-featured platform like AppyBee — with subscription management, QR access control, embeddable widgets, mobile apps, and multi-payment gateway integration — takes 6–12 months depending on scope. We use Agentic Engineering to accelerate delivery 2–10×.