VaultFit

Boutique studios and full-size gyms run on two things: filling classes and knowing who is on the floor. Paper sign-in sheets, overbooked spin rooms, and members who can't self-serve a booking at 10pm all bleed retention and revenue. This category needs a fast, mobile-first system that shows live class capacity, handles check-ins, and gives members a reason to keep coming back.

VaultFit is a working gym front desk. Members tap through a seven-day schedule of real classes — Spin, HIIT, Vinyasa, Power Lifting, Boxing and more — and book or cancel a spot while each class's capacity bar counts down and 'spots left' turns to 'class full' at zero. A front-desk panel checks members in and out, driving a live floor-occupancy meter, while a branded membership card, visit stats, and a 7-day check-in bar chart round out the picture.

The full week of class instances lives in plain JavaScript objects with deterministic seed fill levels, and the DOM re-renders on every interaction so capacity, the 'my classes' list, and member stats always agree. Booking increments a class's headcount and flags it as yours; check-ins update both the occupancy meter and today's bar in the attendance chart. Charts are hand-drawn with CSS — no libraries, no build step, zero console errors, responsive to 360px, and reduced-motion aware.

This is a functional prototype that demonstrates the fitness and gym category, not a real client deployment. Romanov Solutions builds, clones, customizes and integrates gym software fully custom-fit to your facility: recurring class schedules and waitlists, Stripe memberships and class packs, turnstile and barcode check-in, trainer payroll, SMS reminders, and a branded member app. Lease it, try it free, buy the code, or have us build it new.