App development · UK

Got an idea for an app? Let's build it. App development in the UK, from idea to App Store and Google Play.

You bring the idea. We handle everything else.

Start my app Pitch your idea
From first idea to the App Store and Google Play.

How an app happens

It starts
with an idea.

  1. 01IdeaA sentence is enough. “I wish there was an app that…”
  2. 02PlanWe map what it needs to do, and who it's for.
  3. 03DesignWireframes become a real, beautiful interface.
  4. 04BuildOur developers bring it to life. iOS and Android.
  5. 05TestReal devices. Real people. No surprises.
  6. 06LaunchPrepared, submitted, live in the stores.
iOSNowLive on iOS
ANDNowLive on Android

From a thought in your head to an app in their hands.

No code.No tech experience.No problem.

You don't need to know Swift, Kotlin, APIs, servers, databases or deployment. That's our job.

Just tell us what you want to build.

Who can build an app?

  • A business owner.
  • A creator.
  • A start-up.
  • A restaurant.
  • A sports club.
  • A school.
  • An entrepreneur.
  • You.

Good apps don't start with code.

They start with ideas.

Start here

What's your app idea?

Your app doesn't need to start with a business plan. It can start with a sentence.

Got an idea scribbled in your Notes app? That's enough.
No technical detail needed. Plain English is perfect.
We reply personally — no automated sales funnel.

Two ways to build

Pay to build.
Or pitch to partner.

Option 01You own it

Build
my app

Have an idea and want to own the project?

We take you from concept through design, development, testing and launch. One team, the whole journey.

  • Clear estimate before we build 01
  • Design, build & test 02
  • Launch on App Store & Google Play 03
Option 02Selective

Partner with
App Producer

Think your idea has serious potential? Pitch it to us.

For selected projects we may explore a commercial partnership instead of a traditional development-only arrangement.

  • Reduced development fees Possible
  • Revenue share or equity Case by case
  • We invest build time, not just advice If it fits

Not every idea will be a fit, and a pitch isn't an offer of funding. We'll look properly and give you a straight answer.

App Store & Google Play deployment

Building the app is only half the job.

We help get it live.

Store accounts, signing, screenshots, privacy details, review requirements, release tracks. It's a process — and we know it well. You don't need to figure any of this out.

01DevelopmentBuilds ready
02TestingBeta & QA
03Store submissionReview
04In their handsDownloadable
Store preparationDeveloper accounts & listings
App signing & buildsCertificates, bundles, versions
Store assetsIcons, screenshots, copy
Submission requirementsPrivacy, data & content details
TestingBeta tracks & real devices
Release preparationTiming, rollout, notes
Deployment supportThrough review & feedback
UpdatesNew versions, kept current
iOS · iPhone & iPad

Apple
App Store

Builds, TestFlight betas, App Store Connect listings and review preparation — handled.

App Store deployment
Android · phones & tablets

Google
Play

App bundles, signing, testing tracks, Play Console listings and staged rollouts — handled.

Google Play deployment

Your app.Live.Downloadable.Ready.

Apple, App Store, iPhone and iPad are trademarks of Apple Inc. Google Play and Android are trademarks of Google LLC. App Producer is independent and is not affiliated with or endorsed by Apple or Google. Store approval is decided by Apple and Google.

What we build

If you can
imagine it…

Tap any type to start your idea with it.

“Something completely different?”

Good.

We like different.

The process

From “what if…?”
to “download now.”

How it works
01

The idea

Tell us what you're thinking. A few sentences is plenty.

02

Discovery

We work out what the app actually needs to do — and what it doesn't.

03

Prototype

See and experience the concept before full development.

04

Design

We create the user experience and visual identity.

05

Build

Our developers turn the concept into a working application.

06

Test

Devices, functionality, performance and user experience.

07

Deploy

Preparation and submission for the Apple App Store and Google Play.

08

Grow

Updates, improvements and future versions.

Somewhere in the UK right now, someone has an idea for an app. Maybe it's you.

Stop thinking about it.Start building it.

Tell us your idea Explore a partnership

FAQ

Questions?
Good.

Straight answers. If yours isn't here, just ask — there's no such thing as a silly app question.

All questions

How it works

Idea in.
App out.

Eight clear steps from “what if…?” to “download now”. You're involved at every decision — you just never have to touch the technical parts.

Tell us your idea

The journey

Eight steps. One team.

  1. The ideaTell us what you're thinking — a few sentences, a voice note, a sketch on a napkin. We'll ask the right questions.
  2. DiscoveryWe work out who the app is for, what it must do on day one, and what can wait. This is where good apps get their shape and budgets stay sensible.
  3. PrototypeA clickable version of the concept you can hold and tap through before full development starts. Cheap to change here, expensive to change later.
  4. DesignUser experience and visual identity. Screens that feel obvious to use and look like they belong on a premium phone.
  5. BuildOur developers turn the design into a working iOS and Android app, plus any backend, database, payments or integrations it needs.
  6. TestReal devices, real scenarios. Functionality, performance, accessibility and the small details users notice.
  7. DeployWe prepare your store listings, builds and submission details for the Apple App Store and Google Play, and support you through review.
  8. GrowUpdates, fixes, new features and new versions — as your users tell you what they want next.

Who does what

Your part. Our part.

You bringThe idea, the knowledge of your audience, and decisions when it matters.
We bringStrategy, design, development, testing, deployment and the know-how to connect them.
TogetherRegular check-ins, a prototype early on, and no jargon you didn't ask for.

Step one takes two minutes.

Tell us the idea. We'll take it from there.

Start your app

App development UK

Everything it takes to make an app.

Mobile app development from idea to launch and beyond. One team handling product, design, engineering and store deployment — so nothing falls between the cracks.

Get a project estimate How it works

Services

Idea to app store. And after.

  • Idea developmentTurning a rough thought into a clear, buildable concept.
  • Product strategyWho it's for, what version one needs, and how it could make money.
  • UX / UI designJourneys that feel obvious and interfaces that feel premium.
  • PrototypingTap through your app before it's built.
  • App developmentiPhone app development and Android app development — native or cross-platform, whichever suits the app.
  • Backend & API developmentAccounts, databases, payments, notifications, admin tools and integrations.
  • TestingFunctional, device, performance and accessibility testing.
  • Launch preparationStore listings, assets, privacy details and release planning.
  • Apple App Store deploymentBuilds, TestFlight, App Store Connect and review preparation.
  • Google Play deploymentApp bundles, signing, testing tracks and Play Console releases.
  • Updates & maintenanceOS updates, fixes and improvements so your app keeps working.
  • ScalingMore users, more features, more platforms — without starting again.

Platforms

iPhone. Android. Both.

iOS apps →iPhone and iPad apps built to Apple's standards.
Android apps →Apps that work across the huge range of Android devices.
Deployment →Getting it live on the App Store and Google Play.

Got an idea? That's enough.

Tell us in a few sentences and we'll come back with next steps.

Tell us your idea

iPhone app development

Your app. On iPhone.

We're iOS app developers who design and build iPhone and iPad apps that feel at home on Apple devices — then help get them onto the App Store.

Start my iOS app

What's included

Built for iOS. Properly.

  • Native feelInterfaces that follow Apple's design conventions, so the app feels familiar from the first tap.
  • Swift & SwiftUI — or cross-platformWe recommend native or cross-platform based on your app, budget and plans for Android.
  • iPhone & iPad layoutsScreens that adapt across device sizes, orientations and accessibility settings.
  • Apple featuresSign in with Apple, Apple Pay, push notifications, widgets, HealthKit and more — where your app needs them.
  • TestFlight betasTry the app on your own iPhone before it launches, and invite testers.
  • App Store submissionListing, screenshots, privacy details and review preparation. More on deployment →

Picture it on the home screen.

Now let's put it there.

Tell us your idea

Android app development

Built for Android.

Android app developers building apps that run beautifully across phones and tablets from every major manufacturer — then launching them on Google Play.

Start my Android app

What's included

Every screen size. Every brand.

  • Modern AndroidKotlin and Jetpack Compose, or cross-platform when you want iOS and Android from one codebase.
  • Device range testingFlagships, budget phones, tablets, different Android versions — tested, not assumed.
  • Material design, your brandFamiliar Android patterns with a visual identity that's unmistakably yours.
  • Google featuresGoogle sign-in, Google Pay, maps, notifications and more — where your app needs them.
  • Testing tracksInternal and closed testing so you and your testers can try it first.
  • Google Play releaseApp bundles, signing, listing and staged rollout. More on deployment →

Billions of Android devices. One idea.

Yours. Let's build it.

Tell us your idea

Apple App Store deployment

From build to App Store.

Building the app is only half the job. We prepare, submit and support your iOS release so you're not left staring at App Store Connect wondering what comes next.

Get my app live Google Play deployment

What we handle

The App Store process.

  1. Developer account guidanceWe help you set up an Apple Developer Program account in your name, so the app is published by you.
  2. Certificates & signingSigning identities, provisioning and build configuration, set up correctly.
  3. TestFlightBeta builds for you and your testers before public release.
  4. App Store Connect listingName, description, keywords, categories, age rating and pricing.
  5. Store assetsApp icon, screenshots for required device sizes, and optional preview video.
  6. Privacy detailsPrivacy policy link and the app privacy information Apple asks for.
  7. Review preparationWe check the app against Apple's published review guidelines and prepare notes for the reviewer.
  8. Release & updatesManual, scheduled or phased release — and the version updates that follow.

The honest bit

What we can't promise.

Apple reviews every app and makes the final decision on approval and timing. No developer can guarantee acceptance. What we can do is prepare carefully, follow the published guidelines, and respond quickly if Apple asks for changes.

Apple, App Store, iPhone, iPad and TestFlight are trademarks of Apple Inc. App Producer is independent and not affiliated with Apple.

Your app. Live.

Whether we build it or you've built it already — we can help get it there.

Talk to us

Google Play deployment

From build to Google Play.

Play Console, app bundles, signing, testing tracks and rollouts. We prepare and manage your Android release so your app reaches Google Play properly.

Get my app live App Store deployment

What we handle

The Google Play process.

  1. Developer account guidanceWe help you set up a Google Play Console account in your name, including any verification steps Google requires.
  2. App bundles & signingRelease builds in the formats Google Play requires, with signing set up correctly.
  3. Testing tracksInternal, closed and open testing. Some new developer accounts must complete a closed test before going to production — we plan for it.
  4. Store listingTitle, descriptions, graphics, screenshots and categorisation.
  5. Data safety & content ratingThe data safety section, content rating questionnaire and target audience details.
  6. Policy preparationWe check against Google Play's published developer policies before submitting.
  7. Staged rolloutsRelease to a percentage of users first, then roll out fully when everything looks good.
  8. UpdatesNew versions, target API updates and ongoing releases.

The honest bit

What we can't promise.

Google reviews apps and decides on approval, timing and account requirements. Those rules change from time to time. We keep up with them, prepare carefully, and respond quickly to any feedback — but final decisions sit with Google.

Google Play and Android are trademarks of Google LLC. App Producer is independent and not affiliated with Google.

Ready for Google Play?

Let's get your app in front of Android users.

Talk to us

Partner with us

Could it be the next big app?

Pitch it to us. For selected ideas with real commercial potential, we may explore a partnership instead of a traditional development-only fee.

Pitch your app idea

What it could look like

Shared risk. Shared upside.

  • Reduced development feesA lower build cost in exchange for an agreed share of what the app earns.
  • Revenue shareWe're paid partly from the app's success rather than entirely up front.
  • EquityFor some ventures, an agreed equity stake in the business behind the app.
  • Development investmentWe invest our team's design and development time into a project we believe in.

What we look for

Ideas with legs.

A real problemSomething people genuinely want solved — ideally you can explain who and why.
A path to revenueSubscriptions, transactions, advertising, B2B — a credible way it could earn.
A committed founderYou. Bringing the vision, the audience knowledge and the energy to grow it.

Straight talk

How pitching works.

We're selective.

We can only partner on a small number of projects, so most ideas won't qualify for a partnership — even good ones. If yours isn't a fit, we'll say so, and you can still work with us on a standard build if you'd like.

A pitch isn't a promise.

Submitting a pitch doesn't mean we'll invest, fund or partner, and nothing is agreed until terms are set out in a written agreement signed by both sides. We'd always recommend you take your own independent legal and financial advice before signing anything.

Protecting your idea.

Share a summary first — you don't need to reveal everything up front. Sending a pitch doesn't by itself create a confidentiality agreement. If you'd like an NDA before going into detail, tell us and we'll discuss it.

Think it's the one?

Pitch it. We'll look properly and give you a straight answer.

Pitch your app idea

About App Producer

Anyone can have an app.

We started App Producer for one simple reason: great app ideas shouldn't die in a Notes app because someone didn't know where to start.

What we believe

Ideas first. Code second.

Most people with an app idea hit the same wall. Which developer? Which platform? What's an API? How do the app stores work? What will it cost? It's easy to give up before starting.

We take that wall away. You bring the idea. We bring product thinking, design, development, testing and deployment — and we explain things in plain English along the way.

We work with individuals, entrepreneurs, start-ups, creators, established businesses, brands and organisations. Big business, side project, crazy idea. Start here.

How we work

Our principles.

  • No jargon.If we can't explain it simply, that's our problem, not yours.
  • Straight answers.On cost, timescales and whether an idea will work — even when it's not what you hoped to hear.
  • Whole journey.From idea to live app, so nothing gets lost in hand-offs.
  • Built to last.Apps that can be updated, maintained and grown, not rebuilt from scratch.

You have the idea. We make the app.

Start your app

Frequently asked

Good questions.

Everything people usually ask before building an app. Can't see yours? Ask us.

Answers

Straight ones.

How much does it cost to build an app?

It depends on what the app needs to do. A focused app with a few screens is a very different project from a marketplace with payments, accounts and an admin system. We don't publish one-size-fits-all prices because they're rarely accurate.

Instead, we talk through your idea, work out what version one really needs, and give you a clear estimate before any build work starts. If budget is tight, we'll help you find a smaller first version worth launching.

I only have an idea — is that enough?

Yes. That's exactly where we like to start. You don't need a business plan, wireframes or a technical spec — a few sentences explaining what you wish existed is plenty. We'll help shape it from there.

Do I need to understand technology?

No. You don't need to know Swift, Kotlin, APIs, servers, databases or deployment. We'll explain decisions in plain English and only ask you about the things that matter to you and your users.

Can you build both iPhone and Android apps?

Yes. We design and build for iOS and Android. Depending on the app, we'll recommend native development for each platform or a cross-platform approach that shares one codebase — and explain the trade-offs so you can choose.

Can you publish my app to the App Store?

We prepare your app, listing, screenshots and privacy details, handle the submission and support you through Apple's review. Apple makes the final decision on approval, so no one can guarantee it — but careful preparation makes a real difference.

Can you publish to Google Play?

Yes. We handle app bundles, signing, testing tracks, store listing, data safety details and release. Google decides on approval and sometimes has extra requirements for new developer accounts, such as closed testing — we'll plan for those.

How long does an app take to build?

It depends on scope. Simpler apps can move quickly; complex platforms take longer. After discovery we'll give you a realistic timeline with milestones, and keep you updated if anything changes. Store review times are set by Apple and Google and can vary.

Who owns the app?

On a standard paid build, the intention is that you own your app. Ownership of code, designs and other intellectual property is set out clearly in your written agreement before work starts, and we recommend the app is published under developer accounts in your name. Partnership projects will have their own agreed terms.

What happens after the app launches?

Launch is the start. We can support you with fixes, operating system updates, store requirement changes, new features and future versions — through ongoing support arrangements agreed with you.

Do you sign NDAs?

We're happy to discuss an NDA before you share detailed or sensitive information. Please note that submitting an idea through our website doesn't by itself create a confidentiality agreement — so start with a summary and tell us if you'd like an NDA in place first.

What does the partnership option mean?

For selected ideas with strong commercial potential, we may explore an arrangement other than a straight development fee — for example reduced fees in exchange for an agreed revenue share or equity, or investing our development time. Every arrangement is different and only agreed in writing.

Will you invest in my app idea?

Possibly, but most ideas won't qualify and we can't promise funding or investment. We're selective and look for a real problem, a credible route to revenue and a committed founder. Pitch it and we'll give you an honest answer.

Can you improve an app that already exists?

Yes. We can review an existing app, then help with redesigns, new features, performance improvements, fixing store issues or getting it up to date.

Can you take over an unfinished app project?

Often, yes. We'll start by reviewing the code, designs and accounts you have, then tell you honestly whether it's best to continue, rework parts or rebuild. Access to the source code and store accounts makes a big difference.

Still wondering? Just ask.

Tell us your idea Contact us

Contact

Say hello.

Got an app idea? Start here — it's the fastest route. For anything else, drop us a line.

Email

sales@croydonai.com

Based in

United Kingdom

Working with clients across the UK.

Start your app

Tell us your idea.

A few sentences is enough. We'll take it from there.

Plain English is perfect — no tech detail needed.
Everything except your idea and email is optional.
Want to pitch for a partnership? Choose “Explore a partnership”.

Legal

Privacy policy.

How we handle the information you share with us — including your app ideas.

Last updated

[Date]

Template — replace bracketed details and have this reviewed by a qualified adviser before going live.

Who we are

App Producer ("we", "us") is [legal entity name], registered in England and Wales under company number [number], registered office [address]. We are the controller of personal data collected through appproducer.co.uk. Contact: sales@croydonai.com.

What we collect

  • Details you give us: name, email, phone number and anything you write in our forms, including descriptions of your app idea.
  • Technical data: IP address, browser and device information, and basic usage data, where analytics are enabled.

How we use it

  • To respond to your enquiry or idea submission and discuss working together (legitimate interests / steps prior to a contract).
  • To run, secure and improve our website (legitimate interests).
  • To send marketing only where you have opted in, which you can withdraw at any time (consent).

Your app ideas

We use the information you submit about your idea only to assess and respond to your enquiry. We don't sell it. Submitting an idea does not by itself create a confidentiality agreement or NDA; if you'd like one, ask us before sharing detailed or sensitive information.

Sharing

We share data only with service providers who help us run our business (for example email, hosting and form-handling providers — our website forms are delivered by FormSubmit), under appropriate contracts, or where required by law. [List any other key processors.]

International transfers

Where providers process data outside the UK, we rely on appropriate safeguards such as UK adequacy regulations or the International Data Transfer Agreement.

How long we keep it

Enquiries that don't lead to a project are kept for up to [period], then deleted. Client records are kept as long as needed for the contract and legal obligations.

Your rights

Under UK data protection law you can request access to, correction or deletion of your data, object to or restrict processing, and request portability. Contact us to exercise these rights. You can also complain to the Information Commissioner's Office (ico.org.uk).

Cookies

We use only essential cookies unless you agree to analytics cookies. [Describe cookies and consent tool.]

Legal

Terms of use.

The rules for using this website.

Last updated

[Date]

Template — replace bracketed details and have this reviewed by a qualified adviser before going live.

About these terms

These terms apply to your use of appproducer.co.uk, operated by [legal entity name], company number [number]. By using the site you agree to them. Any app design or development work is governed by a separate written agreement.

Information on this site

Content is for general information. It isn't a quote, offer or guarantee of price, timescale, app store approval, funding or partnership. Any engagement is subject to a signed agreement.

Submitting ideas

You keep ownership of the ideas you submit. You confirm you're entitled to share them. Submission doesn't create a partnership, investment commitment, confidentiality agreement or any obligation for either party. We may already be working on, or later work on, similar ideas independently.

Acceptable use

Don't misuse the site, attempt unauthorised access, submit unlawful content or use automated tools to send spam through our forms.

Intellectual property

The site's content and design belong to us or our licensors. Third-party trademarks, including Apple, App Store, Google Play and Android, belong to their owners; we are not affiliated with them.

Liability

We don't exclude liability where it would be unlawful to do so. Otherwise, we're not liable for losses arising from use of the site or reliance on its general information.

Law

These terms are governed by the law of England and Wales, and the courts of England and Wales have jurisdiction.

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