We Build · Booking systems
Custom booking system development
Bookings that fit how you work. Not the other way round.
We'll reply within the hour (working hours).
A booking system built around your business
For when the off-the-shelf app doesn't fit
Foundry offers custom booking system development for UK businesses whose bookings don't fit an off-the-shelf app: multiple staff, rooms or vehicles, deposits, packages, approvals or prices that change by date. We build the booking tool into your website with live availability, payments, reminders and calendar sync, plus an admin area your team actually likes using. Senior developers in Melton Mowbray, Leicestershire, build and review every line, and it's a fixed price after a short call.
At a glance
- What
- Custom online booking tools: availability, booking forms, payments and deposits, reminders, calendar sync and an admin area.
- For
- Service businesses, hire companies, clinics, venues and B2B firms with bookings an off-the-shelf app can't handle.
- Price
- Fixed price in writing after a short call.
- Includes
- Scoping, design, build, payments, emails or texts, calendar sync, admin area, testing, hosting and handover docs.
- Where
- Based in Melton Mowbray, Leicestershire. Clients across Leicestershire, Nottingham, the East Midlands and the UK, in person or remotely.
- How to start
- Book a call. We'll reply within the hour (working hours).
Ready when you are.
We'll reply within the hour (working hours).
What's in an online booking tool we build
The features you need, and none you'll be paying a monthly fee to ignore.
Live availability
Real slots for each person, room, vehicle or service, so nobody books something you can't deliver. Rules for buffers, notice periods and opening hours are built in.
Payments and deposits
Full payment, deposits or card on file, through your payment provider.
Confirmations and reminders
Emails or texts that cut no-shows and answer the usual questions.
Calendar sync
Bookings straight into the calendars your team already uses.
An admin area
Move, cancel and refund bookings without phoning a developer.
Connected to your systems
CRM, accounts and email lists updated automatically.
Custom booking system or an off-the-shelf app?
Off-the-shelf booking apps are fine for simple appointments. A custom build is worth it when your rules are the product.
| Off-the-shelf app | Custom booking system | |
|---|---|---|
| Best for | Simple one-to-one appointments | Complex rules, resources, packages or approvals |
| Cost | Usually a monthly fee per user or booking | Fixed build price, then hosting |
| Fits your process | You work the way the app does | Built around how you take bookings |
| Your data | Held in their system | Yours, in your system |
| Bookable by AI assistants | Depends on the app | Can be built in with an MCP connector |
Ready to be booked by AI assistants
People are starting to ask ChatGPT, Claude and other assistants to find and book things for them. A booking system with clean availability and prices is the part those assistants need.
We can add an MCP connector so an assistant can check your availability and make a booking, with sign-in and payments handled safely. It's the same team, so it's planned in from the start rather than bolted on.
How we build your booking system
- 1
Scope
How bookings work today, every rule and exception, and what can wait for version two.
- 2
Clickable preview
Click through the booking journey and admin area before we build the hard parts.
- 3
Build in short cycles
Working releases you can test, with feedback in WhatsApp or Slack.
- 4
Test with real bookings
Payments, reminders and calendar sync checked end to end.
- 5
Launch and hand over
Hosted, documented and yours. We can keep running it on a care plan.
Our averages. Not our best days.
Our averages
5days
Website, kick-off to live
3hours
Google Ads setup
4hours
Meta Ads setup
7days
To a first PR feature
20mins
Average reply timethis service
Why choose Foundry for custom booking system development
Senior developers.
Led by Paul Francis, our Lead Developer. No juniors learning on your project.
AI tools, human review.
AI speeds up the routine code; a developer reviews every change before it ships.
Built to get bookings.
We're a marketing agency too, so the booking journey is designed to convert, and tracked.
You own it.
Your code, your data and your customer list. No per-booking fees to us.
Booking system FAQs
Only if your bookings have rules an app can't handle, or the monthly fees add up. For simple appointments an app is usually fine, and we'll say so.
It depends on the rules, integrations and admin features. We scope it first and give you a fixed price in writing for the first release.
Yes. Full payments, deposits or a saved card, through a payment provider such as Stripe, with refunds handled in the admin area.
Yes. We can send bookings to the calendars your team already uses, such as Google Calendar or Outlook, and block out time that's already taken.
They can if we add an MCP connector. It lets assistants like ChatGPT and Claude check availability and book, with sign-in and payments handled safely.
Usually, yes. We can build it into your current site or as a separate booking page that matches it.
Yes. The code, data and accounts are yours. We can host and look after it, or hand it over.
More in Web apps & software
Ready when you are. Probably before.
Tell us what you need. We'll reply within the hour (working hours), and most websites go live about 5 days after kick-off.
We'll reply within the hour (working hours).
Or email hello@foundryagency.co.uk