Crenaly: a booking SaaS I designed and built end-to-end for appointment-based businesses in France: salons, barbers, beauty and wellness.

The core idea: when a client cancels, the freed slot is automatically offered to clients who asked for an earlier time. The first to accept gets it, their appointment moves in place, and the slot they leave is offered next. No double booking, no manual work.

Around it, a full product: → Branded booking page for each business, embeddable on their own site → Mobile-first booking flow, no account needed → Agenda, client management, team roles & permissions → Verified reviews, analytics, Stripe billing

Product, UX/UI, frontend and backend. Next.js · TypeScript · NestJS · PostgreSQL · Redis

Automatically offering a cancelled slot to the next client is such a practical feature for salons and barbers. Designing and building Crenaly end to end must have made those flows much tighter.

Same app. Two moods. ☀️🌙 Which one would you actually use every day? Vote and tell me why in the comments 👇

#UIUX #ProductDesign #MobileAppDesign

Dark mode for evenings, but light feels easier for daily use. Both look clean though!