Build an App in Minutes: From One Sentence to a React Native MVP on Your Phone

Describe an app in a sentence, answer three questions about it, read the plan, and about two minutes later you are scanning a QR code and holding the thing on your own phone. That part is real, and it is genuinely useful — the gap between "I have an idea" and "I have used it" is where most app ideas quietly die. What is not real is the version of this promise that ends with your app on the App Store. No generator publishes for you, and the distance between a running app and a shipped one is most of the work.

TL;DR:

  • Two minutes gets you a complete Expo React Native project — every screen, navigation wired, themed, with sample data — running on your phone via a QR code.
  • You get the source as a zip: Expo SDK 54, expo-router, Reanimated, AsyncStorage, generated icon and splash, a working EAS build config, and a README. No licence, no attribution.
  • It costs €89, charged at the plan step, so you read what will be built before paying. Ten refinements are included.
  • It does not deploy, and it does not generate a backend, accounts, payments or sync. Everything it builds runs locally on one device.
  • Publishing is on you: Apple Developer at $99 a year, Google Play at $25, store review, and Apple's Guideline 4.2 rejection of thin apps.

Table of Contents

What "In Minutes" Honestly Means

Three different things get compressed into that phrase, and only one of them is true.

True: generating a complete, running React Native project from a description takes a couple of minutes. The plan step takes about two minutes to produce, the build itself about a minute, and then it is on your phone.

Half true: "building an app" in the sense of producing the screens, the navigation and the look. That is what is generated, and for a simple local app it is a genuinely large fraction of the code — but it is the fraction that was always fastest to write.

Not true: "having an app" in the sense that ends with strangers downloading it. Between the generated project and that outcome sit the store accounts, the review process, the backend if it needs one, and the several rounds of change that follow the first time someone who is not you tries to use it.

The useful framing is not "an app in two minutes". It is a decision in two minutes — the fastest honest way to find out whether you still want the thing once you have held it.

Pro Tip: The value is in holding it. Ideas that sound excellent described in a sentence very often feel pointless after ninety seconds on a phone, and finding that out for €89 instead of €18,000 is the entire point.

The Six Stages, Start to Phone

  1. Idea. One sentence. "A fishing log that records what I caught, where, and in what weather."
  2. Interview. Three questions, generated from your idea rather than from a fixed form — who it is for, what the main screen shows, what the one action is.
  3. Customise. Set the direction: the look, the tone, the feature emphasis.
  4. Plan. A written plan of exactly what will be built — the screens, the navigation, the data, and a plain statement of the limits. About two minutes. This is where the €89 is charged, so you read the plan before you pay for the build.
  5. Build. The slow part, and it is about a minute. The whole project is generated: screens, navigation, theme, components, sample data, icon, splash.
  6. Preview. A QR code. Scan it with your phone, and the app opens in Expo Go — your actual device, not a simulator in a browser tab. Change anything you do not like and rebuild; ten refinements are included.

What You Actually Get

A downloadable zip containing a real project, not an export from a proprietary builder:

  • Expo SDK 54 with expo-router for file-based navigation — tabs and stacks wired together, not a pile of disconnected screens.
  • Every screen the plan described, laid out and populated with sample data so the app is navigable from the first launch.
  • A theme and component kit — consistent colours, spacing and typography applied across the app rather than per screen.
  • Reanimated for transitions and AsyncStorage for local persistence.
  • A generated app icon and splash screen.
  • package.json, app.json and a working EAS build configuration, so producing an actual binary is a command rather than a research project.
  • A README explaining the structure and how to run it.

No licence, no attribution, no runtime dependency on us. It is your source code, and you can hand it to any React Native developer on earth.

What It Does Not Do

This list is printed in the plan before you pay, and it is worth restating because it is the part that decides whether the tool is right for you.

  • It does not deploy. Nothing is submitted to any store on your behalf.
  • It does not generate a backend. No server, no API, no database.
  • It does not generate accounts. No sign-up, no login, no user identity.
  • It does not sync. Data lives on the one device that created it. Delete the app and it is gone.
  • It does not do payments — no in-app purchases, no subscriptions, no Stripe.
  • It does not connect to real data. The sample data is sample data.

Everything on that list is where the genuinely hard engineering lives. A generator that claimed to produce all of it in a minute would be claiming something that is not true, and you would find out at the worst possible moment.

What Publishing to the Stores Actually Takes

Since the phrase "and deploy" is attached to so many app builders, here is the real sequence.

Accounts first. An Apple Developer Program membership costs $99 a year and requires identity verification that can take days, longer for a company enrolment needing a D-U-N-S number. A Google Play developer account is $25 once, with its own identity checks.

Then a build. The generated project ships with an EAS configuration, so producing a signed binary is a short step — but it is a step, and signing certificates and provisioning profiles are where first-timers lose an afternoon.

Then the listing. Screenshots at the required sizes, a description, keywords, a privacy policy URL, and App Privacy answers describing exactly what data the app collects.

Then review. This is the part that catches generated apps. App Review Guideline 4.2 rejects apps with minimum functionality — Apple's language is that an app should offer something more than a repackaged website or a simple utility that could be a web page. A generated app submitted unchanged, with sample data and no real function behind it, is squarely in that category. Guideline 4.3 catches apps that are substantially similar to others already on the store, which is the risk for anything built from a common template.

So the honest sequence is: generate, then use it, then replace the sample data with something real, then add the one thing that makes it worth existing, then submit. The generator gets you to the start of that list in two minutes. The list is still the list.

Pro Tip: Do not submit a generated app unchanged. A rejection under 4.2 is not a rejected build, it is a flagged account, and the second submission is read more harshly than the first.

When Generated Source Is the Right Start, and When It Is Not

It is the right start when: the app is local and single-device — a tracker, a log, a reference tool, a calculator, a checklist; when you want to feel the interaction before committing to it; when you need something concrete to show a co-founder, a client or an investor this afternoon; or when you can write React Native yourself and simply want the boring 70% done for you.

It is the wrong start when: the app needs accounts, a server, payments or shared data, because none of that is generated and bolting it onto a generated shell is not obviously faster than starting properly; when the interface is the product and has to be exactly right; or when you are buying rather than building, in which case a finished app for sale gets you further for a comparable amount of money.

There is a third case worth naming: you generate it, you like it, and you now want it built properly. That is the most common good outcome, and the plan you paid for doubles as an unusually precise brief — it already says what the screens are and what they do.

What It Costs, End to End

  • The builder: €89 once, charged at the plan step, source included, ten refinements included.
  • Apple Developer Program: $99 per year, if you intend to publish to iOS.
  • Google Play developer account: $25 once.
  • Backend, if the app needs one: from nothing on a free tier to real money at scale. Not generated.
  • Finishing it properly: whatever it costs to build the part that matters. Our cost calculator gives a figure for that.

The comparison worth making is not €89 against free. It is €89 against the several thousand a first prototype usually costs, and against the months an idea sits unbuilt because the first step is too large.

Build Yours

Describe it in a sentence, answer three questions, and read the plan before you pay anything. If you like what it says, the build takes about a minute and lands on your phone through a QR code. Build an MVP.

Sources

FAQ

Can you really build an app in minutes?

You can build a running app in minutes. You cannot build a finished product in minutes, and anything promising otherwise is measuring the wrong thing. What happens in a couple of minutes is real: a described idea becomes an Expo React Native project with every screen laid out, navigation wired up, a consistent theme and sample data, running on your own phone through a QR code. What does not happen is the backend, the accounts, the payments, the store review, and the several rounds of editing that turn a working app into one people keep.

What do you actually get from an AI app builder?

From this one, a complete Expo SDK 54 React Native project you can open in an editor: every screen, tab and stack navigation through expo-router, a theme and component kit, animations via Reanimated, local storage through AsyncStorage, sample data, a generated app icon and splash screen, a working EAS build configuration, and a README. It arrives as a downloadable zip with no licence and no attribution requirement — it is your source code, not a subscription to someone's platform.

Can an AI app builder deploy to the App Store?

This one does not, and be careful with any that claims to. Publishing requires your own Apple Developer Program membership at $99 a year and a Google Play developer account at $25 one-off, and both stores review submissions against their guidelines. Apple in particular rejects apps it judges to have minimum functionality under App Review Guideline 4.2, which is exactly the risk profile of a freshly generated app submitted unchanged. The generated project includes a working EAS build configuration, so the path to a build is short — but the accounts, the review and the judgement about whether it is ready are yours.

How much does it cost to build an app with AI?

Ours is €89, charged once at the plan step before the build runs, and that buys the source. The interview and the plan come first so you can read what is going to be built before you pay for it, and you get ten free refinements afterwards to change what you do not like. The costs that follow are the ones people forget: an Apple Developer account at $99 a year, a Google Play account at $25, and whatever backend you add if the app needs to do more than run on one device.

Is a generated app good enough to launch?

It is good enough to launch a simple, local, single-device app — a tracker, a reference tool, a calculator, a utility that stores its data on the phone. It is not good enough to launch anything that needs accounts, a server, payments or data shared between users, because none of that is generated and all of it is where the real engineering lives. The honest way to use it is as a fast, concrete starting point: get the thing on a phone, find out whether you still want it once you have held it, and then decide what deserves to be built properly.