Root Booster v4.0.9
APK · 2.7 MB · version code 104 · Android 5.0+ · uploaded Nov 24, 2021
- Same certificate as the 2 other versions checked Details
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Answer this to unlock the download. It keeps automated downloaders away.
File information
- Version
- v4.0.9 (104)
- Uploaded
- Nov 24, 2021
- Size
- 2.7 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- ddc8cbe943c03dd76b9b20a6dd61697a
- Signing certificate (SHA-1)
- 9C:03:81:E2:DB:68:8E:42:FC:03:E1:85:3B:48:9B:CE:47:55:E9:06
- Signed by
- CN=Dominik No?ka, OU=Dominik No?ka, O=Dominik No?ka, L=T?inec
- File name
- com-ram-memory-booster-cpu-saver-104-60904700-ddc8cbe943c03dd76b9b20a6dd61697a.apk
- Package
- com.ram.memory.booster.cpu.saver
- Downloads (all versions)
- 10M+
- Age rating
- PEGI 3 · Everyone
What's new in v4.0.9
2.4
- Bug fixes
2.3.3
- Supports new devices, increased governor database
2.3.2
- Stability improvements
2.3.1
- French language
- Backward compatibility for older devices
2.3.0
- Widget bug fixed
- Improved interface
2.2.9
- Billing problems fixed
- Possibility to buy all Extreme modes together
2.2.8
- Solved launch errors mainly for LG devices
2.2.7
- Auto backup for stock settings
2.2.6
- Solved compatibility issues
- Polish, Slovak, Turkish translations
Permissions (8)
This version requests 8 permissions, 3 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- See all installed apps Sensitive android.permission.QUERY_ALL_PACKAGES
- Clear app cache android.permission.CLEAR_APP_CACHE
- Get package size android.permission.GET_PACKAGE_SIZE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Kill background processes android.permission.KILL_BACKGROUND_PROCESSES
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “Dominik No?ka” The developer's name — though anyone can put any name in a certificate.
- Same certificate as the 2 other versions checked
Store checks
- Developer signature not checked yet Jun 24, 2025
- Uploaded by “appokbestx” Bronze tier · 948 followers · uploading since 2018
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install Root Booster on Android 5.0+
You'll need about 5.4 MB of free space.
- Download the APK — tap Download APK above (2.7 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-ram-memory-booster-cpu-saver-104-60904700-ddc8cbe943c03dd76b9b20a6dd61697a.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 ddc8cbe943c03dd76b9b20a6dd61697a. 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 Root Booster — 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 5.0+). 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.