Relax River VR v4.0
APK · 53.7 MB · version code 41 · Android 5.0+ · uploaded Apr 30, 2026
- 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 v5.0, uploaded Apr 30, 2026 — the same day as this one.
- Size: this file is 53.7 MB; the latest is 58.8 MB (5.2 MB larger).
- The latest version asks for 2 more permissions: Run foreground services, In-app purchases (Google Play Billing).
- The latest version no longer asks for: Read shared storage, Modify shared storage.
File information
- Version
- v4.0 (41)
- Uploaded
- Apr 30, 2026
- Size
- 53.7 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- ARM 64-bit
- Graphics
- OpenGL ES 3.1+
- Screen
- Small screens and larger
- MD5
- 296d0593d0d86c8c017b2e98b7a54436
- Signing certificate (SHA-1)
- 99:44:F8:AE:12:FE:37:05:2B:09:D2:84:13:EB:84:6A:82:A3:66:5E
- Signed by
- CN=Francesco Palenga, OU=it, O=sferasrl, L=Rome, ST=Italy, C=39
- File name
- com-sfera-relaxrivercb-41-74558709-296d0593d0d86c8c017b2e98b7a54436.apk
- Package
- com.sfera.relaxrivercb
- Downloads (all versions)
- 500K+
- Age rating
- PEGI 3 · Everyone
What's new in v4.0
Updated Android version for best performance and security
Game data (OBB)
This app needs extra data files (178.5 MB) next to the APK. Their download links appear once the download is unlocked.
- Main OBB
- main.29.com.sfera.relaxrivercb.obb (178.5 MB)
- Main OBB MD5
- 5f98df13fc17c3164d56a85250ea090b
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
- Google Play license check com.android.vending.CHECK_LICENSE
- Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
- Prevent the device from sleeping android.permission.WAKE_LOCK
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- 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 Apr 30, 2026.
- Certificate issued to “sferasrl” This is the certificate of the Google Play version.
- Same certificate as the other version checked
Store checks
- Developer signature verified Apr 30, 2026
- Validated against Google Play Apr 30, 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 Relax River VR on Android 5.0+
You'll need about 285.8 MB of free space (the APK plus 178.5 MB of game data).
- Download the APK — tap Download APK above (53.7 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-sfera-relaxrivercb-41-74558709-296d0593d0d86c8c017b2e98b7a54436.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 296d0593d0d86c8c017b2e98b7a54436. 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 (178.5 MB), without renaming or unzipping, into Android/obb/com.sfera.relaxrivercb/. 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 Relax River VR — 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.
- “App not compatible with your device” — this build contains native code for 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.