# Trigger (open-source smart home app)

> Trigger is a free, open-source smart home app for Android. Open doors via Wi-Fi using HTTPS/SSH. It has 168 GitHub stars and is released under the GPL-2.0-or-later license, and you can install it from F-Droid.

Open and close doors, ring door bells and see the door state. Supported HTTPS/SSH/MQTT/Bluetooth and the Nuki SmartLock. Features: * Support of HTTPS, SSH, Bluetooth and MQTT. * Support for Nuki SmartLock. * Multiple door profiles. * Auto select profiles by a SSID of connected WiFi. * HTTPS server/client certificate support. * SSH key generation (ED25519, RSA) with a passphrase. * Custom status images. * QR code support. * Support of backup.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/mwarning/trigger |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 168 |
| License | GPL-2.0-or-later (open source) |
| F-Droid | https://f-droid.org/packages/com.example.trigger/ (package com.example.trigger) |
| F-Droid anti-features | none flagged |
| Google Play | not linked |
| App Store | not linked |
| Website | none listed |
| Official | no |
| Category | Smart home & IoT |
| Latest release | v4.0.8 (Feb 8, 2026) |
| Last commit | May 15, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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Canonical page: https://appsgit.com/mobile-apps/trigger
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