Bronze
£4,995A simple app your customers install from your website.
- Web app that installs on any phone
- Up to 6 screens
- Login, forms and notifications
- Bookings, loyalty or menus
- Live in 2 weeks
App development · Essex
App development in Essex
Booking, ordering, loyalty and customer apps for iPhone, Android and the web, built by a real developer near Chelmsford. Fixed prices from £4,995, with the first apps live in two weeks.
Looking for an app developer in Essex?
Search for an app developer in Essex and you will mostly find directories: long lists of agencies, many of them based somewhere else, all asking you to fill in a form and wait for a quote. It is hard to tell who will actually build your app, where they are or what it will cost.
We are a real developer in Great Waltham, a few minutes from Chelmsford. You talk to the person who builds your app, you see the price before you get in touch, and you can meet us in person if you would like to.
Web app or App Store app?
This is the first question, and the honest answer saves a lot of money.
A web app runs in the phone’s browser and can be added to the home screen with its own icon, so to your customers it looks and feels like an app. There is no App Store review, updates go live instantly, and the same app works on iPhone, Android, tablet and desktop. It suits bookings, loyalty cards, menus, ordering and member areas. Our Bronze package builds one for £4,995, live in about two weeks.
An App Store app is downloaded from Apple’s App Store or Google Play. It can make fuller use of the phone, such as background notifications, the camera and offline use, and being in the stores helps some customers trust and find you. It costs more to build and maintain. Our Silver package covers iPhone and Android, with store submission included, for £9,995.
A full platform combines both with an admin dashboard for your team and links to your existing systems. That is Gold, at £19,995.
Our guide to how much an app costs in the UK explains what drives the price, and all three packages are on our prices page.
Why us
Fixed, published prices. App quotes are often vague until late in the process. Ours are on the page, and the price for your app is agreed in writing before any work starts.
Founder-led. Waltham Websites was founded in 2007 and relaunched in 2026 by Fay O’Leary. Before 18 years of building websites and apps for Essex businesses, Fay worked in IT in London and Canary Wharf for firms including Credit Suisse, PwC and Merrill Lynch.
Fast, because AI does the repetitive work. Fay has just spent a year leading AI automation for a national company, including APIs and a developer portal. AI now writes much of the routine code, which is why our timelines are measured in weeks, not months. Fay designs the app, makes the decisions and tests every screen on real phones.
Who it is for
- Clubs and community groups who want fixtures, membership and news in one place.
- Hospitality businesses that want ordering, bookings or a loyalty scheme.
- Service businesses whose customers book, track jobs or reorder regularly.
- Teams who need an internal app for jobs, stock or timesheets. For internal tools and automation, see AI automation and software.
If you mainly need customers to find you and get in touch, a website will usually do more for less money. If you want to sell products online, see e-commerce website design.
We work with businesses across Essex, from Chelmsford to Colchester, and in London.
What you get
Everything you need, nothing you don’t.
Advice on the right kind of app
We tell you honestly whether you need a web app, an App Store app or neither, before you spend anything.
Designed for the people using it
Screens planned around what your customers or staff need to do, so the app is quick to learn and pleasant to use.
Accounts, bookings and payments
Customer logins, bookings, orders, loyalty schemes, notifications and card payments, depending on what your app needs to do.
App Store and Google Play submission
From Silver we prepare your listing, screenshots and privacy details and handle the submission to both stores for you.
An admin dashboard for your team
Gold includes a dashboard where your team can manage customers, content and orders without calling a developer.
Connected to what you already use
Apps can link to your website, booking system, accounts software or customer records, so information is entered once.
Prices
App packages
Published, fixed and agreed in writing. See all our prices.
Silver
£9,995A proper app in the App Store and Google Play.
- iPhone and Android
- Up to 15 screens
- Customer accounts and payments
- App store submission included
- Live in 4 weeks
Gold
£19,995A full platform for your business.
- iPhone, Android and web
- Up to 30 screens
- Admin dashboard for your team
- Connects to your existing systems
- AI features built in
- Live in 6 to 8 weeks
How we work
Four steps, no surprises.
Discover
A free 20-minute call. We learn your business, customers and goals, then send a fixed price within one working day.
Design
You see your new homepage on your own phone within days, and tell us what to change.
Build
Every page built, written and tested on every device, with Google and AI search set up from the start.
Grow
We launch, then keep you safe, fast and climbing with care and SEO plans.
Case study
Work we’re proud of.
What clients say
“Fay worked tirelessly with encouragement, creativity, passion and professionalism. We are super proud of our website.”
“Painless and very swift service. Within a few days, had a brand new website.”
Tony Hague, SaniScreen
“Friendly, great communication and a fantastic result. We highly recommend and you won’t be disappointed.”
Justin Malia, Cobra Sealants
“Fay produced a brilliant website for me. Very friendly, efficient and professional service.”
Joanne Lees, Joanne Lees Interiors
Questions
App development: your questions answered.
Can’t see yours? Call or text 07922 652180.
Areas we cover
How much does an app cost in the UK?
Our apps cost £4,995 for a web app that installs on any phone, £9,995 for an iPhone and Android app in the App Store and Google Play, and £19,995 for a full platform with an admin dashboard. Every price is fixed and agreed in writing before we start.
What is the difference between a web app and an App Store app?
A web app runs in the phone's browser and can be added to the home screen like an app, with no App Store needed. An App Store app is downloaded from Apple's App Store or Google Play and can use more of the phone's features, but costs more to build and has to pass each store's review.
How long does it take to build an app?
A Bronze web app is live in about 2 weeks, a Silver iPhone and Android app in about 4 weeks, and a Gold platform in 6 to 8 weeks. Store review times are set by Apple and Google and can add a few days.
Do I need an app or would a website do?
Many businesses only need a good mobile website, and we will tell you if that is you. An app earns its place when customers use it again and again, for example to book, reorder, collect loyalty points or check in.
Who owns the app and the code?
You do, including the code, the content and your App Store and Google Play listings. We publish store apps under your own developer accounts, so the app stays yours if you ever move on.
Are there ongoing costs after launch?
Yes, apps need hosting, occasional updates for new phone software and, for store apps, Apple and Google developer account fees. We list all of these in your quote so you know the running cost before you commit.
Can you add AI features to an app?
Yes, Gold includes AI features such as an assistant that answers customer questions or helps your team find information. We only add AI where it saves time or helps customers, not for show.
Do you work with businesses outside Essex?
Yes, we build apps for businesses across the UK. Most of the work happens online and by phone, and we are happy to meet in person across Essex and in London.
Let’s build something that works.
Tell us what you need. Fay replies personally within one working day with a recommendation and a fixed price.