Underground App Store APK Builder

v4.1.0 • one-click builder • lightweight source upload • private build engine • persistent signing • PHP-served downloads
SOURCE READY
Source Versionv1.3.0versionCode 12
Catalog Apps6approved entries
On-Demand Apps0server-hosted APKs
Last Source ChangeOct 9, 2026 12:02 PMauto-detected
Build EngineREADYJava 17 • Gradle 8.10.2 • Android SDK
/home/appbox/public_html/Underground-AppStore-APK-Builder/UndergroundAppStore
The Underground WAVE 2Underground TiviMate 7.0The Underground IBO 4.3Mouse ToggleX-Plore File ManagerZinema 7.0
Build Engine
This builder now uses the same self-contained approach as your working APK builder. On the first run it installs its own private Java 17, Gradle 8.10.2, and Android SDK. You do this once. Future APK builds reuse the engine automatically.
Engine StatusBUILD ENGINE READYBUILD ENGINE READY
Live Folder Workflow
Note: native-apps.json contains your live catalog and admin messages. v4.1 keeps it OUT of the automatic server-upload ZIP by default so a normal APK rebuild cannot erase live admin messages.
Replace/upload the UndergroundAppStore source folder through FileRun/FTP. The builder detects it automatically. It builds from a temporary copy, fixes known source prerequisites, bumps the release version automatically after the first successful build, signs every APK with the same permanent Underground key, generates the updater JSON, then deletes the temporary build copy so storage does not keep growing.
Replace App Store source
Large-file safe. The builder uploads in small chunks, so PHP/Nginx upload limits do not block your 150+ MB source. You can choose the source ZIP or the entire UndergroundAppStore folder.
Nothing selected.
Automatic Release Handling
Last Successful Buildv1.3.1versionCode 14
Updater Destinationinstall.undergroundapps.online/updates/appstore/latest.json
Release StorageLatest Onlyold APK builds auto-cleaned