Change Detection is an open-source (Apache-2.0) Android app by Bernardo Ferrari. The APK we host is 3.4 MB, it needs Android 5.0 or newer, and it declares 4 permissions.
The file on this page is Change Detection 2.2, 3.40 MB, and it installs on Android 5.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time com.bernaferrari.changedetection entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest inside the APK declares 4 permissions, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is Apache-2.0. We took this build from F-Droid, and the source for this exact version is linked below.
The most recent release upstream is from Mar 8, 2020, over 6 years ago. It still installs; it is simply not being updated.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 2.2
- Size
- 3.40 MB
- Requires Android
- API 21
- Package
- com.bernaferrari.changedetection
- Signature checked on
- Sep 22, 2026
- Where this file came from
- F-Droid
- Licence
- Apache-2.0
- Source code
- Source for this version
File SHA-256: 2e9b9425dacb87a02f28343540ad586daa01f238beb9b61debb4fb63c0d6a6db
Signing certificate (SHA-256): 638f43bd686dd7c856ac4e635449a12ed8583ad2efa2235bbf234036476f7b82
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- INTERNET
- ACCESS_NETWORK_STATE
- WAKE_LOCK
- RECEIVE_BOOT_COMPLETED
