✉➡🌍 Acastus-Photon

GDR!

✉➡🌍 Acastus-Photon is an open-source (LGPL-3.0-only) Android app by GDR!. The APK we host is 23 MB, it needs Android 4.4 or newer, and it declares 4 permissions.

The file on this page is ✉➡🌍 Acastus-Photon 1.28, 22.76 MB, and it installs on Android 4.4 and newer.

We compared the signing certificate of this build with the certificate recorded the first time name.gdr.acastus_photon 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, including access to precise location and approximate location. Android asks you to approve those the first time the app needs them.

Its licence is LGPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.

The most recent release upstream is from Sep 25, 2023, over 3 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.

Download APK · 22.76 MB

Version: 1.28
Size: 22.76 MB
Requires Android: API 19
Package: name.gdr.acastus_photon
Signature checked on: Sep 22, 2026
Where this file came from: F-Droid
Licence: LGPL-3.0-only
Source code: Source for this version

File SHA-256: ece8e98b420feadc4265abb9558c14c944a1580794490e462d6e6cf205a4eeb4

Signing certificate (SHA-256): a83c1ce41f470dd9e52fb566a55cf0e1daff29b49aaab8bc4641224056c7b524

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.