Make your AI-built booking system reliable for real customers
Code review, payment integration, and production services for appointment scheduling, reservation, and booking applications built with AI coding tools.
Booking systems coordinate scarce resources — time slots, rooms, tables, appointments — between providers and customers. A double-booking or a missed confirmation email directly costs you money and trust. AI tools build attractive calendar UIs quickly, but the underlying scheduling logic, timezone handling, and payment integration need to be bulletproof before you take real bookings.
Booking System challenges we solve
The most common issues in AI-built booking system projects.
Double-booking prevention
Two customers booking the same time slot simultaneously is the most critical failure mode. AI-generated booking logic often has race conditions — checking availability and creating the booking aren't atomic, so two requests can both see the slot as available and both succeed.
Timezone handling
If your provider is in New York and your customer is in Los Angeles, a '2 PM appointment' means different things. AI tools store times in the server's timezone or the developer's local timezone, causing bookings to appear at wrong times for users in other timezones.
Calendar integration and availability
Providers have existing calendars (Google Calendar, Outlook) that affect their availability. Without two-way calendar sync, providers get double-booked with their personal events, or manual availability management becomes a full-time job.
Payment and cancellation policies
Bookings often require deposits or full prepayment. Cancellation policies (full refund within 24 hours, 50% after that, no refund day-of) need precise time-based logic. AI tools implement basic checkout but not the nuanced refund rules that booking businesses need.
Confirmation and reminder notifications
No-shows kill booking businesses. You need immediate booking confirmations, reminders at 24 hours and 1 hour before, cancellation notifications, and rescheduling flows. AI tools send a confirmation email at best — the full notification pipeline is usually missing.
Recurring bookings and scheduling rules
Weekly appointments, buffer time between bookings, lunch breaks, holidays, and maximum bookings per day are all scheduling rules that AI tools don't implement. Without these constraints, your calendar becomes unmanageable for providers.
Waitlist and cancellation backfill
When a popular time slot opens up due to cancellation, you need to notify waitlisted customers automatically. This turns lost revenue into recovered bookings. AI tools don't build waitlist functionality.
What we review
Our booking system audit covers these critical areas.
Double-booking prevention — atomic availability checks and booking creation
Timezone handling — correct display and storage across all timezones
Payment integration — deposits, refunds, cancellation policy enforcement
Notification pipeline — confirmations, reminders, cancellation alerts
Calendar sync — Google Calendar and Outlook integration
Scheduling rules — buffer times, availability windows, holidays
Cancellation and rescheduling — policy enforcement, automated refunds
Mobile booking experience — full booking flow works on phones
Admin dashboard — provider view for managing schedule and bookings
Services for your booking system
Fix Bugs
We diagnose and fix bugs in AI-generated apps — from mysterious crashes to features that just don't work right.
Security Review
Deep security analysis of your application — from API endpoints to database access.
Add Features
New functionality, integrations, and capabilities that your AI tool couldn't build or that you need built properly.
Deploy & Ship
From local development to production deployment.
Start with a self-serve audit
Get a professional review of your booking system at a fixed price.
Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 checks
- SSL/TLS analysis
- Security headers
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerabilities
- Code quality review
- Dependency audit
- AI pattern analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Get a clear plan
We respond in 24 hours with scope, timeline, and cost.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
How do I prevent double-bookings in my AI-built system?
Double-bookings happen because of race conditions — two requests checking availability at the same time. The fix is database-level locking: use a unique constraint on the time slot, or use a transaction that checks and books atomically. Our code review identifies exactly where your booking logic is vulnerable.
Do I need to build my own calendar or use a third-party service?
It depends on your needs. For simple appointment booking, services like Cal.com or Calendly handle the complexity for you. For custom booking logic (multi-resource scheduling, complex pricing, specific workflows), a custom system gives you full control. We can help you decide which approach fits and implement either option.
How important is timezone handling really?
If you have users in more than one timezone, it's critical. A booking shown at the wrong time means a missed appointment, an angry customer, and lost revenue. We store all times in UTC and convert for display based on each user's timezone — this eliminates an entire category of bugs.
Other use cases
SaaS App
Professional code review, security hardening, and deployment services for SaaS applications built with AI coding tools.
Marketplace
Code review and production services for two-sided marketplaces built with AI tools.
E-Commerce Store
Production services for e-commerce applications built with AI tools.
MVP / Prototype
Bridge the gap between AI-generated prototype and production-ready MVP.
Building a booking system?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.