From idea to App Store: how to get your app built (and funded)

Getting an app from idea to the App Store takes five broad steps: shaping the idea, building a simple first version (an MVP), testing it, submitting it to Apple and Google, and launching. For most people the whole thing takes a few weeks to a few months, and costs from around £995 for a productised app up to £20,000-plus for a bespoke build. And if you have the idea but not the budget, Brightray offers revenue-share deals for startups — so you can build without paying it all up front. Here is the honest journey.

Step one: shape the idea

Before a line of code, get clear on the essentials. What is the one problem your app solves? Who is it for? And crucially, what is the smallest version that would still be useful? Most first-time founders want to cram everything in. The winning move is the opposite — strip it back to the core, and build that first.

Step two: build an MVP, not the finished dream

An MVP — minimum viable product — is the simplest version of your app that does the main job and nothing else. You build the essential feature, launch it, and learn from real users before spending on extras.

This matters because it saves you money and heartache. A full custom app can cost £20,000 to £60,000, and it is painful to spend that only to discover people wanted something different. An MVP lets you test the idea cheaply, then invest in what actually works. If your idea fits a proven pattern, a productised build gets you to that first version even faster and cheaper.

Step three: design and build

Now it gets built. Most apps today are built with React Native, which produces one app for both iPhone and Android — faster and cheaper than building each separately. Truly demanding apps may use native Swift. Alongside the app itself there is usually a back end (the server that stores your data) and often an admin area so you can manage things. A good developer keeps you in the loop throughout, in plain English.

Step four: test, then submit to the stores

Before launch, the app is tested on real devices to catch anything that breaks. Then it goes to Apple's App Store and Google Play for review — Apple in particular checks every app before it goes live. This needs an Apple Developer account (£79/year) and a Google Play account (a one-off £20). Apple's review can take a day or a few, so build in a little time. A developer who has shipped apps before knows how to get through review without nasty surprises.

Step five: launch and improve

Getting live is the start, not the finish. The apps that succeed keep improving — adding the features real users ask for, fixing issues, and staying current as phones change. This is why ongoing support matters, and why productised apps like Brightray's loyalty app roll hosting, updates and support into a simple £99/month.

Funding it when you have no big budget

Here is the part that stops many people: the money. Not everyone has £20,000 sitting ready. There are honest routes through it:

• Start productised. If your idea fits a proven platform, you launch for hundreds rather than tens of thousands, and prove it works before spending more.
• Build an MVP first. Spend a little to test the core idea, then reinvest what it earns.
• Revenue share. For startups and founders, Brightray offers revenue-share deals — we build the app and share in its success, so you are not paying the whole cost up front. It aligns everyone: the app has to actually work for both of us.

Brightray also handles confidential, NDA-first builds if your idea needs protecting before it is public.

The honest bottom line

From idea to App Store is a clear path: shape it, build the smallest useful version, test it, submit it, launch and improve. Keep the first version small, spend as little as you can to prove the idea, and use an MVP or a revenue-share deal if the budget is tight. The biggest mistake is building the whole dream before you know anyone wants it.

Got an idea and want to know the honest path to launch — and how to fund it? Message Brightray on WhatsApp at 07977 785345.