Cairn: Health Aggregator

Max Fiedler

Cairn: Health Aggregator is an open-source (MIT) Android app by Max Fiedler. The APK we host is 20 MB, it needs Android 14 or newer, and it declares 17 permissions.

The file on this page is Cairn: Health Aggregator 0.3.0, 19.98 MB, and it installs on Android 14 and newer.

We compared the signing certificate of this build with the certificate recorded the first time com.luminaapps.cairn 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 17 permissions, none of which cover contacts, location, SMS, the camera or the microphone.

Its licence is MIT. We took this build from F-Droid, and the source for this exact version is linked below.

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.

Download APK · 19.98 MB

Version: 0.3.0
Size: 19.98 MB
Requires Android: API 34
Package: com.luminaapps.cairn
Signature checked on: Oct 10, 2026
Where this file came from: F-Droid
Licence: MIT
Source code: Source for this version

File SHA-256: f900ec487fbc50375b9022298f3854c107e4f2821e8a9f2cb10543ea4021b881

Signing certificate (SHA-256): b53624a0de7eef20330857f3cc0f261fce1e5eeb4c60ad42a9f9487a8daac9e0

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.