GroSens Companion v2.5.5
APK · 21.8 MB · version code 765 · Android 7.0+ · uploaded Aug 1, 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 v2.5.6, uploaded Oct 8, 2026 — about 2 months after this one.
- Size: this file is 21.8 MB; the latest is 21.8 MB (5.6 KB larger).
- Both versions request the same permissions.
File information
- Version
- v2.5.5 (765)
- Uploaded
- Aug 1, 2026
- Size
- 21.8 MB
- Requires
- Android 7.0+ (API 24)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 8061e94e76e41fd57f6f9a2f69a547f0
- Signing certificate (SHA-1)
- 0E:43:D9:51:78:86:13:D6:8B:65:F6:49:EF:1A:31:07:4B:DB:31:74
- Signed by
- CN=Grodan, OU=Grodan, O=Grodan, L=Eindhoven, ST=Noord Brabant, C=NL
- File name
- com-rockwool-grodan-companion-765-75896415-8061e94e76e41fd57f6f9a2f69a547f0.apk
- Package
- com.rockwool.grodan.companion
- Downloads (all versions)
- 1K+
- Age rating
- PEGI 3 · Everyone
What's new in v2.5.5
Includes an updated firmware for Rootzone sensors
Permissions (19)
This version requests 19 permissions, 8 of them sensitive.
- Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
- Bluetooth advertise Sensitive android.permission.BLUETOOTH_ADVERTISE
- Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
- Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
- Camera Sensitive android.permission.CAMERA
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Change wifi multicast state android.permission.CHANGE_WIFI_MULTICAST_STATE
- Control vibration android.permission.VIBRATE
- Foreground service connected device android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.rockwool.grodan.companion.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- 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 Aug 1, 2026.
- Certificate issued to “Grodan” This is the certificate of the Google Play version.
- Same certificate as the 4 other versions checked
Store checks
- Developer signature verified Aug 1, 2026
- Validated against Google Play Aug 1, 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 (4 other versions compared). AAPKs doesn't scan files itself.
How to install GroSens Companion on Android 7.0+
You'll need about 43.6 MB of free space.
- Download the APK — tap Download APK above (21.8 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-rockwool-grodan-companion-765-75896415-8061e94e76e41fd57f6f9a2f69a547f0.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 8061e94e76e41fd57f6f9a2f69a547f0. 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 GroSens Companion — 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 7.0+). 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.