APK App Builder — Build an Installable Android APK Online

A real Android build, not a wrapper

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The genuine native toolchain

Your APK is compiled with Gradle and the React Native or Flutter build chain — the same tools professional Android teams use. It is not a website wrapped in a shell.

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Release-signed, stable identity

Every APK is signed with a persistent release key. Installing a new build updates the app in place — no uninstall/reinstall cycle for your users.

🖼️

Your name and icon

The APK carries your app’s display name and launcher icon — generate an icon from the app’s name or upload your own; the file you download is named after your app.

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Download from the chat

Ask the agent to build and a live card shows progress and the estimated time, then the download button. Previous builds stay available.

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Zero local setup

No Android Studio, no SDKs, no environment variables. Everything — editing, preview, and the native build — happens from your browser.

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Backends travel with it

If your app uses a database or API, the installed APK talks to the same hosted backend as the preview. Nothing to reconfigure.

How it works

Describe the app

Plain English in the chat. The agent writes a real React Native or Flutter app and shows it running on a live phone preview.

Iterate until it’s right

Ask for changes in the same chat — screens, colors, features, data. The preview updates as the code changes.

Ask for the APK

“Give me the APK.” The build runs server-side on the real toolchain; a card in the chat shows live progress and the estimated time.

Install on any Android device

Download, open the file on your phone, allow the install. Android shows its standard prompt for apps from outside Google Play — that’s normal for every sideloaded APK.

When a direct APK beats the app store

Internal company tools

Distribute to your team directly — no store review, no developer account, updates whenever you ship.

Real-device testing

Put an MVP in testers’ hands today and iterate from their feedback tomorrow.

Kiosks & dedicated devices

Purpose-built apps for counters, warehouses or events, installed straight onto the hardware.

Client demos

Send a client an installable preview of their app instead of a slide deck.

FAQ

Questions, answered

Is the APK really native?

Yes. It is compiled by Gradle with the React Native or Flutter toolchain, ships Hermes/AOT-compiled code, and installs and updates like any other Android app.

Why does my browser warn me when downloading?

Chrome on Android shows “File might be harmful — download anyway?” for every APK downloaded outside Google Play — including big-name apps’ official APKs. It is a blanket policy for the file type, not a judgment of your app. Tap “Download anyway”, then allow the install.

Can users update the app later?

Yes. Builds are signed with a stable release identity, so installing a newer APK updates the app in place, keeping its data.

Can I publish to Google Play later?

Yes — the project is a standard React Native or Flutter codebase, so you can take the same app through Play Console for a store listing whenever you choose.

Do I need a developer account anywhere?

No. An App Builder Agent account is all you need — the Free plan is enough to build and download your first APK.

Build an installable APK — no Android Studio required