Jujitsu v2.2
APK · 9.9 MB · version code 18 · Android 4.1+ · uploaded Nov 24, 2025
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v2.3.0, uploaded Nov 26, 2025 — about 2 days after this one.
- Size: this file is 9.9 MB; the latest is 11.6 MB (1.7 MB larger).
- Android: this version needs Android 4.1+; the latest needs Android 4.4+. Use this one if your device runs an older Android release.
- The latest version asks for 1 more permission: Google Play install referrer.
- The latest version no longer asks for: Launcher update count (custom), Launcher read settings (custom), Launcher update shortcut (custom), Launcher update badge (custom), Badge read (custom), Badge write (custom), Home broadcast badge (custom), Push messaging (app-defined).
File information
- Version
- v2.2 (18)
- Uploaded
- Nov 24, 2025
- Size
- 9.9 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 045b219cef4bfa086384633b59f4bc6b
- Signing certificate (SHA-1)
- CC:1F:51:5A:5F:E7:CA:72:A3:B3:F7:EA:5E:16:22:50:D9:94:99:22
- Signed by
- CN=Jerome Demyttenaere
- File name
- com-whiteronin-jujitsu-18-72494929-045b219cef4bfa086384633b59f4bc6b.apk
- Package
- com.whiteronin.jujitsu
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v2.2
New update with lots of cool features.
3 new screens :
- splash screen
- bushido (virtues)
- credits (special thanks)
Features :
- Last colored belt saved for a quick jump at your next visit.
- New button (zoom icon) at the top of the screen belts, you can view more detailed pictures (more enjoyable for tablets).
Expect more to come for black belt (kata).
Hope you enjoy this update :)
Permissions (12)
This version requests 12 permissions, none of them sensitive.
- Badge read (custom) com.sec.android.provider.badge.permission.READ
- Badge write (custom) com.sec.android.provider.badge.permission.WRITE
- Full network access android.permission.INTERNET
- Home broadcast badge (custom) com.sonyericsson.home.permission.BROADCAST_BADGE
- Launcher read settings (custom) com.htc.launcher.permission.READ_SETTINGS
- Launcher update badge (custom) com.majeur.launcher.permission.UPDATE_BADGE
- Launcher update count (custom) com.anddoes.launcher.permission.UPDATE_COUNT
- Launcher update shortcut (custom) com.htc.launcher.permission.UPDATE_SHORTCUT
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Push messaging (app-defined) com.whiteronin.jujitsu.permission.C2D_MESSAGE
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jul 1, 2017.
- Certificate issued to “Jerome Demyttenaere” This is the certificate of the Google Play version.
- Same certificate as the other version checked
Store checks
- Developer signature verified Jul 1, 2017
- Validated against Google Play Jul 1, 2017
- Antivirus scan passed Jun 3, 2020
- Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself.
How to install Jujitsu on Android 4.1+
You'll need about 19.8 MB of free space.
- Download the APK — tap Download APK above (9.9 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-whiteronin-jujitsu-18-72494929-045b219cef4bfa086384633b59f4bc6b.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 045b219cef4bfa086384633b59f4bc6b. 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).
- Open Jujitsu — 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 4.1+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.