Epistolaire is an open-source (Unlicense) Android app by hydrargyrum. The APK we host is 2.7 MB, it needs Android 4.4 or newer, and it declares 2 permissions.
The file on this page is Epistolaire 0.5.1, 2.66 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 re.indigo.epistolaire 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 2 permissions, including access to your SMS messages. Android asks you to approve those the first time the app needs them.
Its licence is Unlicense. We took this build from F-Droid, and the source for this exact version is linked below.
The most recent release upstream is from May 2, 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
- 0.5.1
- Size
- 2.66 MB
- Requires Android
- API 19
- Package
- re.indigo.epistolaire
- Signature checked on
- Sep 22, 2026
- Where this file came from
- F-Droid
- Licence
- Unlicense
- Source code
- Source for this version
File SHA-256: a42537070f7f403834b5e79d86619a2deaa8efdbea5e598520142ae96e552047
Signing certificate (SHA-256): 80c4211408c47401104029349e143bfa974c409e8e878fa44278f09b319713ec
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
- READ_SMS
- WRITE_EXTERNAL_STORAGE
Screenshots
