Ebb

A period tracker that keeps your cycle on your phone. No account, no internet.GPL-3.0-or-later

Casio G-Shock Smart Sync

Add smart functions to your Casio square BT G-Shock Watch.MIT

How2Vote

See how parties' real parliamentary voting records compare with your views.AGPL-3.0-or-later

Logic Labs

A pocket digital-logic lab — breadboard, 74xx TTL chips, offline coursework.GPL-3.0-only

MeshNavarra Utility

Administer Meshtastic nodes and NavaTastic repeaters over USB and BluetoothGPL-3.0-or-later

treehouses remote

Communicate with headless Raspberry Pi mobile server running treehouses image viAGPL-3.0-only

Smart Radio Telescope

Control an Az/El/polarization radio telescope mount over your local WiFiGPL-3.0-or-later

IM2SMS

A simple app to import IM chat histories into Android’s SMS storage.GPL-3.0-or-later

Shellwave: SSH Client & SFTP

Open-source SSH client and terminal with SFTP, port forwarding and jump hostsGPL-3.0-only

Fauxx - Privacy Through Deception

Poison data collection profiles by generating decoy signals.AGPL-3.0-only

Knit

Encrypted mesh chat over Wi-Fi Aware & Bluetooth — no internet, no servers.GPL-3.0-or-later

RKNHardering

Detects VPN and proxy usage on Android using RKN methodologyAGPL-3.0-only

Chitralaya CloudGallery App

Transform Telegram into your personal, unlimited photo cloud storage.Apache-2.0

Privacy Flip

Manage your device privacy based on lock/unlock stateGPL-3.0-only

GPS Cockpit

GPS Cockpit & Head-Up DisplayAGPL-3.0-or-later

TableChips

Chips for a card table. One phone hosts; guests join from a browser, offline.GPL-3.0-only

MeteoCompare

Compare 21 weather models, 10-day forecasts, local alerts and detailed charts.Apache-2.0

Oksigenia SOS

Smart safety and distress alerts with fall and inactivity detection.GPL-3.0-only

RelayPony

Encrypted file transfer, phone to phone. Offline, no account, no cloud.Apache-2.0

Mihrab: The Muslim Companion

Prayer times, adhan, the Quran, duas and qibla in one calm, private app.AGPL-3.0-or-later