Key v2.2.1
APK · 25.2 MB · version code 156 · Android 11+ · uploaded Aug 6, 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 v2.2.13, uploaded Jul 15, 2026 — about 11 months after this one.
- Size: this file is 25.2 MB; the latest is 31.6 MB (6.4 MB larger).
- Android: this version needs Android 11+; the latest needs Android 12L+. Use this one if your device runs an older Android release.
- Both versions request the same permissions.
File information
- Version
- v2.2.1 (156)
- Uploaded
- Aug 6, 2025
- Size
- 25.2 MB
- Requires
- Android 11+ (API 30)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- 01606b6d195be12739ba84a412818761
- Signing certificate (SHA-1)
- 4D:E5:6F:07:51:EB:35:F8:A1:0B:6F:0D:DA:1F:F9:7B:D2:C9:10:AB
- Signed by
- O=Interflex Datensysteme GmbH, L=Durchhausen, C=DE
- File name
- com-interflex-key-156-71341541-01606b6d195be12739ba84a412818761.apk
- Package
- com.interflex.key
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v2.2.1
- Customer specific credential layout
- Customer defined credential settings
- Bug fixing
Permissions (12)
This version requests 12 permissions, 3 of them sensitive.
- Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
- Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
- Camera Sensitive android.permission.CAMERA
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.interflex.key.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Nfc android.permission.NFC
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- 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
- Signature matches the Google Play version Checked by the source store on Aug 6, 2025.
- Certificate issued to “Interflex Datensysteme GmbH” This is the certificate of the Google Play version.
- Same certificate as the 2 other versions checked
Store checks
- Developer signature verified Aug 6, 2025
- Validated against Google Play Aug 6, 2025
- 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 (2 other versions compared). AAPKs doesn't scan files itself.
How to install Key on Android 11+
You'll need about 50.5 MB of free space.
- Download the APK — tap Download APK above (25.2 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-interflex-key-156-71341541-01606b6d195be12739ba84a412818761.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 01606b6d195be12739ba84a412818761. 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 Key — 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 11+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, x86 64-bit, 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.