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Trigger

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.

github.com/mwarning/trigger (opens in a new tab)

Get it on F-Droid (opens in a new tab)View on GitHub (opens in a new tab)

About Trigger

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.

Privacy and F-Droid

F-Droid builds Trigger from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

No anti-features flagged on the latest F-Droid build.

Screenshots

  • Trigger screenshot 1
  • Trigger screenshot 2
  • Trigger screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Trigger FAQ

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What is Trigger?

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.

Is Trigger free and open source?

Yes. Trigger's source code is public on GitHub under the GPL-2.0-or-later license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.

How do I install Trigger?

You can install Trigger from F-Droid (package com.example.trigger); the links are on this page. Its GitHub repository also publishes releases (latest: v4.0.8).

Is Trigger still maintained?

The repository's most recent commit was on May 15, 2026. Its F-Droid listing was last updated on Feb 10, 2026. appsgit only lists apps whose repository had a commit in the last six months.