Build a Booking Platform in 21 Days
Availability management, online payments, and booking management — fixed price.
Why Booking & Reservation App development is hard to get right
Calendar availability logic with timezone support is consistently underscoped — bookings go wrong across timezones
Payment capture at booking vs at service is a UX and financial decision with real technical implications
Double-booking prevention requires database-level locking — not just UI validation
Automated reminders (SMS + email) significantly reduce no-shows but require careful scheduling infrastructure
What we build — in detail
Availability calendar
Provider sets available hours, blocks, and holidays. Customer sees real-time availability. Buffer time between bookings. Timezone-aware throughout.
Booking flow
Service/resource selection, date/time picker, customer details, payment capture, confirmation email.
Payment options
Full payment at booking, deposit + balance on arrival, or pay on arrival. Stripe for all card processing. Cancellation & refund policy enforcement.
Automated reminders
Email + SMS (Twilio) reminders at configurable intervals (24h, 2h before). No-show handling with fee charging.
Customer management (CRM-lite)
Customer history, notes, total spend, rebooking prompts, birthday discounts.
Provider / staff management
Multi-staff booking, individual calendars, service assignment per staff member.
Analytics dashboard
Revenue, utilization rate, peak hours, cancellation rate, top clients.
Tech Stack
- →Next.js (web)
- →React Native (mobile — optional)
- →Supabase (Postgres + Auth)
- →Stripe
- →Twilio (SMS)
- →Resend (email)
- →Vercel
What you get
- Customer-facing booking web app
- Provider dashboard
- Mobile app (optional)
- Full source code
Frequently asked questions
How do you prevent double bookings?
Database-level locking via Postgres transactions with FOR UPDATE. When a booking is being confirmed, the slot is locked at the DB level — no race condition possible even with simultaneous bookings.
Can you integrate with Google Calendar / Outlook?
Yes — Google Calendar API and Microsoft Graph API for bi-directional sync. New bookings appear in provider's calendar; events blocked in Google Calendar block availability in the booking app.
Free Booking & Reservation App resources
Download these before you start — no credit card, just your email.
Ready to build your booking & reservation app?
Book a free 30-minute scoping call. We'll map out exactly what v1 looks like, give you a fixed price, and start within a week.
Book a Free Scoping Call →Free · No commitment · Delivered in 2–3 weeks