Pre-Release Build
Version: 0.0.0-dev
Branch: main
Commit: 9f57df3
Built: 20261112-014222
This is a production-ready pre-release build with:
- Release build configuration
- ProGuard optimization enabled
- Code minification enabled
- No debug features
Pick a backend, then download the APK matching your device's CPU architecture.
- Python backend, RECOMMENDED — ships Mark Qvist's official python reference implementations of Reticulum and LXMF via Chaquopy.
- Kotlin backend — ships Torlando's EXPERIMENTAL, AI-GENERATED native reticulum-kt / lxmf-kt / lxst-kt stack.
The python version is highly recommended. The kotlin version is a work in progress, and is not yet verified to be completely safe.
The kotlin version may yield better battery life depending on your device, and comes in a smaller apk due to not requiring a python runtime.
Python backend — by architecture (with crash reporting):
columba-official-rns-py-armeabi-v7a.apk— Older 32-bit ARM phones (armeabi-v7a)columba-official-rns-py-arm64-v8a.apk— Most modern Android phones (arm64-v8a)columba-official-rns-py-x86_64.apk— Chromebooks & emulators (x86_64)columba-official-rns-py-universal.apk— Universal fallback (all architectures)
Kotlin backend — by architecture (with crash reporting):
columba-EXPERIMENTAL-reticulum-kt-armeabi-v7a.apk— Older 32-bit ARM phones (armeabi-v7a)columba-EXPERIMENTAL-reticulum-kt-arm64-v8a.apk— Most modern Android phones (arm64-v8a)columba-EXPERIMENTAL-reticulum-kt-x86_64.apk— Chromebooks & emulators (x86_64)columba-EXPERIMENTAL-reticulum-kt-universal.apk— Universal fallback (all architectures)
Telemetry variants:
Each APK above also has a matching -no-sentry variant (e.g. columba-official-rns-py-arm64-v8a-no-sentry.apk) without crash reporting for maximum privacy. Sentry collects stack traces when Columba encounters errors
and provides helpful information to the developer to improve Columba, but is hosted at sentry.io, and is thus not the maximum privacy option.
Not sure which to pick? Most Android phones use arm64-v8a. If unsure, use the universal APK.
Verification
See SECURITY.md for verification instructions.
Signing Certificate Fingerprints:
SHA-256: 02:2B:12:20:48:63:A3:1F:BF:07:5B:C9:F9:34:1E:33:52:78:80:2E:80:C9:27:A4:75:46:E4:7E:2F:4A:0C:5F
SHA-1: 0A:6B:AE:58:4E:D7:B5:D0:35:8B:3C:7B:65:11:D6:3A:81:21:0D:CE
SHA256 Checksums:
36375b23f8ebfab2e19e0eb0fa94039e41365627e972818778295d34f3a84b47 columba-EXPERIMENTAL-reticulum-kt-arm64-v8a-no-sentry.apk
9fe4a4b3cbe8775a77fcd15bf61c5ec50dba18a1f78822e9988a3650d4930917 columba-EXPERIMENTAL-reticulum-kt-arm64-v8a.apk
4ade3a53b61203059dc26eecac4edd481a427440ddb4ba6af82a4576546bb967 columba-EXPERIMENTAL-reticulum-kt-armeabi-v7a-no-sentry.apk
404927dd03bac3ad20d99ec8f3bff03992625291ebb5bedd9100cf4078f79d5c columba-EXPERIMENTAL-reticulum-kt-armeabi-v7a.apk
fde64677a56c52cac8f6ae0d258b19b86a578f83070070ff574b2b2c33837d9b columba-EXPERIMENTAL-reticulum-kt-universal-no-sentry.apk
e9c6ae18c12a2251b97d1ec542b8546d2631e9855056635e518cf0a00719e822 columba-EXPERIMENTAL-reticulum-kt-universal.apk
32f4a03cfc968d822652b2fbf2bc06bbafcf02b050827b47b47d38807091220f columba-EXPERIMENTAL-reticulum-kt-x86_64-no-sentry.apk
74a5b221c859c75085533d55d9b77a8cfb23609d52eb2902eea2a007e047d459 columba-EXPERIMENTAL-reticulum-kt-x86_64.apk
52de527880cd47272f3758cdbb0aff213b5bf8d216ad27f3bdbee7cf8c81c499 columba-official-rns-py-arm64-v8a-no-sentry.apk
b2ea72bae6a43c26de5f1caed749c6aeba0ee2d73f64aa9dfeb723b7b1cf6ab9 columba-official-rns-py-arm64-v8a.apk
5abecd4cb576fea3573f4ca9600aecc60c61fb88de29127dd51c4a7b03ea07bb columba-official-rns-py-armeabi-v7a-no-sentry.apk
915a2a7462c858cc87fe1ec4d902ccca68dfea734b028e966d23dcf8d962eb9e columba-official-rns-py-armeabi-v7a.apk
d29dcdaf271f00dfd53917eb0b680d11c464aecce02eca8f7f43cae79c8a371b columba-official-rns-py-universal-no-sentry.apk
0f6ff8a49dadeaef09092dd07e1b49264ce18697fa64d90564ff9da2e2845636 columba-official-rns-py-universal.apk
55556d8a2c70e4549197431d9efd25a9bc6a25f4327eb6d1cbaee3ef7d10ae5b columba-official-rns-py-x86_64-no-sentry.apk
46a62f7aecf6de16a38ed87d1b56e2dbe87b9da6d77ae60b1216c44010fd1126 columba-official-rns-py-x86_64.apk
Installation
Download the APK matching your device and install it.
Note: You may need to enable "Install from Unknown Sources" in your device settings.