When most people think of app development, they picture Silicon Valley startups with millions in funding. But custom app development isn't just for tech giants — it's increasingly accessible and valuable for UK small businesses too.
I'm Katie, a freelance app developer based in Windsor, Berkshire. I've built custom web apps for businesses of all sizes — from wedding planning platforms to video storytelling apps to competition websites. Here's everything you need to know about getting a custom app built for your business.
What is a Custom Web App?
A custom web app is software built specifically for your business needs, accessible through a web browser. Unlike a standard website, an app has:
- User accounts and authentication — People can sign up, log in, and have their own dashboard
- Dynamic data — Content that changes based on who's using it
- Interactive features — Users can create, edit, delete, and manage things
- Backend logic — Processing that happens behind the scenes
Think of it as the difference between a brochure (website) and a tool (app).
Why Would a Small Business Need a Custom App?
Automate Manual Processes
If you're doing something manually that could be automated — tracking orders, managing bookings, processing applications — an app can handle it.
Create a New Revenue Stream
A custom app can become a product in itself. Subscription platforms, directories, marketplaces — these are all apps that generate recurring revenue.
Stand Out from Competitors
While your competitors are using generic tools, a custom app gives your customers a unique, branded experience.
Scale Without Hiring
An app can serve 100 customers just as easily as 10, without you needing to hire more staff.
Real Examples of Apps I've Built
Ever After List — Wedding Planning Platform
A full-featured SaaS connecting couples with wedding suppliers. Features include supplier directory with search and filters, venue finder, guest list management, budget tracking, and an admin dashboard.
Live at: everafterlist.com
MYOS — Video Storytelling App
A platform where users record, revisit, and share personal stories through video. Features include user authentication, video upload and streaming, an explore feed, and profile pages.
Live at: mymyos.com
Competition Platform
A complete raffle and competition website with ticket purchasing, Stripe payments, countdown timers, winner announcements, and a full admin back-office.
How Much Does App Development Cost in the UK?
Custom app costs vary hugely depending on complexity:
| App Type | Timeline | Starting From |
|---|---|---|
| Simple web app | 4–6 weeks | £3,000 |
| Directory or marketplace | 6–10 weeks | £5,000 |
| Platform with payments | 8–12 weeks | £7,000 |
| Complex app with AI/integrations | 10–16 weeks | £10,000+ |
These are starting points — every project is different. The best way to get an accurate quote is a free discovery call where we map out your specific needs.
My App Development Process
1. Discovery Call
We explore your idea, your target users, and what the app needs to do. I ask the right questions so nothing gets missed.
2. Scope & Quote
I put together a clear project scope, timeline, and fixed price. No vague estimates — you know exactly what you're getting.
3. Design & Build
I design the UI and build your app using modern, scalable technology (React, TypeScript, cloud backend). You get regular updates throughout.
4. Launch & Support
We launch your app, gather feedback, and I provide ongoing support as your product evolves.
Freelance App Developer vs Agency
For small business app development, a freelance developer often makes more sense:
- Lower cost — No agency overheads
- Direct communication — You talk to the person building it
- Faster turnaround — Less process, more building
- Flexible — Easy to add features and iterate
Ready to Build Your App?
If you have an idea for a custom app — whether it's a booking system, a marketplace, a client portal, or something entirely new — I'd love to hear about it.
Book a free discovery call and let's explore what's possible. Based in Windsor, Berkshire, working with businesses across the UK.
