Buff Knight! - Idle RPG Runner v1.100
APK · 52.2 MB · version code 132 · Android 5.1+ · uploaded Dec 31, 2023
- Other versions use a different certificate 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 v1.105, uploaded May 13, 2026 — about 2 years after this one.
- Size: this file is 52.2 MB; the latest is 49.7 MB (2.6 MB smaller).
- Android: this version needs Android 5.1+; the latest needs Android 7.1+. Use this one if your device runs an older Android release.
- The latest version asks for 7 more permissions: Access adservices ad id, Access adservices attribution, Access adservices topics, Find accounts on the device, Google Play license check, Internal broadcast protection (app-defined), Receive push notifications.
File information
- Version
- v1.100 (132)
- Uploaded
- Dec 31, 2023
- Size
- 52.2 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
- 1b712de8778c636e55be77c9917dcaf2
- Signing certificate (SHA-1)
- 53:FA:34:6B:EC:E9:25:EC:40:0C:9D:6A:5A:25:D8:BF:C1:98:12:6F
- Signed by
- C=US, O=Buff Studio
- File name
- com-buffstudio-ontheherofree-132-66778443-1b712de8778c636e55be77c9917dcaf2.apk
- Package
- com.buffstudio.ontheherofree
- Downloads (all versions)
- 1M+
- Age rating
- PEGI 12 · Low Maturity
What's new in v1.100
Updated Android Target API Level
Permissions (10)
This version requests 10 permissions, 2 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Advertising ID com.google.android.gms.permission.AD_ID
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run foreground services android.permission.FOREGROUND_SERVICE
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “Buff Studio” Not the developer's name (“Buffstudio”). Names in certificates can't be verified, so this alone proves nothing.
- Other versions use a different certificate v1.105. Android normally won't update an installed app with a file signed by another certificate, and a new certificate can mean a different publisher. v1.105
Store checks
- Developer signature under review May 13, 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 (1 other version compared). AAPKs doesn't scan files itself.
How to install Buff Knight! - Idle RPG Runner on Android 5.1+
You'll need about 104.5 MB of free space.
- Download the APK — tap Download APK above (52.2 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-buffstudio-ontheherofree-132-66778443-1b712de8778c636e55be77c9917dcaf2.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 1b712de8778c636e55be77c9917dcaf2. 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 Buff Knight! - Idle RPG Runner — 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.