AAB to APK Converter

Got an app bundle you cannot install? Convert AAB to APK directly on your phone, with no computer, no command line, and no uploads. AAB to APK Converter extracts the base module from an Android App Bundle and rebuilds it as a universal APK you can install, save, or share, all in a few taps.

Why Choose This Converter

• Runs entirely on the device: the internet permission is not declared, so your files are never uploaded to any server
• Signed output: converted APKs are auto-signed with signature schemes v1, v2, and v3, or you can sign with your own JKS or PKCS12 keystore
• No bundletool, no PC, no developer setup needed
• No ads, no account, no tracking
• Clean Material 3 design with system, light, and dark themes

Key Features

• AAB to APK: turn an app bundle into a universal APK that installs directly
• APK to AAB: restructure an APK into app bundle format as well
• Full format conversion: resources and XML are converted between protobuf and binary formats, both directions
• Play-ready output: native libraries are stored uncompressed and 16 KB page-aligned, so converted bundles pass Google Play's alignment checks and APKs install without native-library extraction errors
• Automatic signing with a generated debug keystore, or bring your own keystore
• Save results to Download/AABtoAPK or share them through any app
• Works on Android 9 and later

How It Works

1. Pick the AAB file you want to convert
2. Choose automatic signing, or select your own keystore and enter its credentials
3. Wait a moment while the bundle is converted on the device
4. Install the APK, save it to Downloads, or share it anywhere

APK to AAB Too

The conversion also runs in reverse. Point the app at an APK and it restructures the contents into AAB base-module format, converting resource tables and XML along the way. Output bundles keep native libraries uncompressed and aligned the way Google Play requires.

Why On-Device Conversion Matters

Most ways to open an app bundle need bundletool on a computer, or a website that asks you to upload the file. Uploading someone's build to an unknown server is a real privacy risk, and a laptop is not always at hand. This aab converter does the whole job locally: the manifest declares no internet permission, so the app could not send your files anywhere even if it wanted to.

Reliability

The conversion engine is covered by a suite of more than 200 unit tests, including full round-trip conversions, resource table checks, and the native-library alignment rules that Google Play enforces. Real-world install failures reported by users have been fixed and are locked in by regression tests.

Great For

• Installing an AAB that a developer or colleague sent you
• Testing your own app bundle on a device without a full development setup
• Converting a bundle to apk for sideloading on a device with no store access
• Moving a build between APK and AAB formats without touching a terminal

Convert AAB to APK in seconds, keep every file on your own device, and skip the computer entirely. The app is free and supported only by optional donations.