# Diffuse > Local-first native apps that answer one question: what changed on this device between two points in time? Diffuse is not a cloud product. Five genuinely native apps — Android, macOS, iOS, iPadOS, watchOS — capture and compare snapshots on the device that observed them. The four Apple apps share a Swift domain engine. Android is native Kotlin. Snapshots never leave the device. There is no account, no telemetry, and no third-party Swift packages. - Site: https://hoangsonww.github.io/Diffuse-Native-Apps/ - Source: https://github.com/hoangsonww/Diffuse-Native-Apps - License: MIT ## Product - [Landing page](https://hoangsonww.github.io/Diffuse-Native-Apps/): marketing site with screenshots and FAQ - [README](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/README.md): public summary, setup, architecture sketch - [Root architecture](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/ARCHITECTURE.md): Swift + Kotlin system map ## Docs - [Documentation index](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/README.md) - [Swift architecture](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/Architecture.md) - [Android](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Android/README.md) - [Privacy](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/Privacy.md) - [Apps](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/Apps.md) - [CLI](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/CLI.md) - [Testing](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/Testing.md) - [Glossary](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/Glossary.md) - [Tech stack](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/TechStack.md): every technology used and why - [Troubleshooting](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/Troubleshooting.md): build, test, and emulator failures - [Releasing](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/Releasing.md): tags, unsigned artifacts, versioning - [ADRs](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/Documentation/adr/README.md) ## Optional - [Security policy](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/SECURITY.md) - [Support / FAQ](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/SUPPORT.md) - [Contributing](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/CONTRIBUTING.md) - [Changelog](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/CHANGELOG.md) - [Citation](https://github.com/hoangsonww/Diffuse-Native-Apps/blob/master/CITATION.cff)