# Change Detection (open-source app)

> Change Detection is a free, open-source app for Android and iOS. Automatically track website changes in background. It has 743 GitHub stars and is released under the Apache-2.0 license, and you can install it from F-Droid and Google Play.

Change Detection tracks changes on websites you otherwise would visit frequently to see if there is something new. Use cases: * Teacher says grades will be published "soon", but no one knows what "soon" means and you are tired of reloading. * You are working with a server and wants to know the result from a request, periodically. * You are waiting for updates on an Exam, like if something was postponed or updated. * You want to monitor the Dagger documentation to see when Thermosiphon's explanation improves.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/bernaferrari/ChangeDetection |
| Platforms | Android, iOS |
| Built with | Kotlin Multiplatform |
| GitHub stars | 743 |
| License | Apache-2.0 (open source) |
| F-Droid | https://f-droid.org/packages/com.bernaferrari.changedetection/ (package com.bernaferrari.changedetection) |
| F-Droid anti-features | none flagged |
| Google Play | https://play.google.com/store/apps/details?id=com.bernaferrari.changedetection |
| App Store | not linked |
| Website | none listed |
| Official | no |
| Category | Other |
| Latest release | none on GitHub |
| Last commit | Oct 27, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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