I learn v1.54
APK · 48.1 MB · version code 154 · Android 5.1+ · uploaded Apr 19, 2026
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
File information
- Version
- v1.54 (154)
- Uploaded
- Apr 19, 2026
- Size
- 48.1 MB
- Requires
- Android 5.1+ (API 22)
- CPU support
- ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- 640d684bd6a60d75a29ead7bc407c785
- Signing certificate (SHA-1)
- 48:ED:E5:40:9D:33:A9:54:1C:84:F6:A5:C5:DE:C0:4A:C7:4A:BD:D1
- Signed by
- CN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
- File name
- com-smallbang-japp-154-74412376-640d684bd6a60d75a29ead7bc407c785.apk
- Package
- com.SmallBang.japp
- Downloads (all versions)
- 50K+
- Age rating
- PEGI 3 · Everyone
Game data (OBB)
This app needs extra data files (384.1 MB) next to the APK. Their download links appear once the download is unlocked.
- Main OBB
- main.143.com.SmallBang.japp.obb (384.1 MB)
- Main OBB MD5
- 8fe70a8cd9615eb33f2a844c1d0c23e1
Permissions (6)
This version requests 6 permissions, 2 of them sensitive.
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Bluetooth android.permission.BLUETOOTH
- Full network access android.permission.INTERNET
- Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
- Run foreground services android.permission.FOREGROUND_SERVICE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Apr 19, 2026.
- Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
- Same certificate as the 3 other versions checked
Store checks
- Developer signature verified Apr 19, 2026
- Validated against Google Play Apr 19, 2026
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself.
How to install I learn on Android 5.1+
You'll need about 480.3 MB of free space (the APK plus 384.1 MB of game data).
- Download the APK — tap Download APK above (48.1 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-smallbang-japp-154-74412376-640d684bd6a60d75a29ead7bc407c785.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 640d684bd6a60d75a29ead7bc407c785. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Copy the game data — before the first launch, move the OBB file (384.1 MB), without renaming or unzipping, into Android/obb/com.SmallBang.japp/. On Android 11 and later many file managers can't open that folder; use the built-in Files app or copy it from a computer over USB.
- Open I learn — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 5.1+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.