Free, from Coders Farm

A voice assistant that runs on your phone. Airplane mode on.

Ask by voice or text, and a language model on the phone answers. After a one-time download, what you ask never leaves your device.

Download for Android Coming to Google Play

Want it in every room? Set up Domovoi for the whole house.

The Domovoi assistant on a phone, labelled "on this phone", answering why cats purr Domovoi's amber cat

Download Domovoi for Android

Version 1.0.0-rc1, released October 15, 2026. Free and open source under the MIT license.

Most phones

For 64-bit phones, almost every phone from about 2017 on. Includes the on-device assistant. Pick this one if you're not sure.

domovoi-1.0.0-rc1-arm64-v8a.apk · 80.0 MB SHA-256: 268ff4212d5c403e1060870f30b61811a8fbe2b0878882de490ac8d17e20f474
Download the APK

Older and budget phones

For 32-bit phones, including Android Go. Everything except the on-device assistant, which needs a 64-bit phone.

domovoi-1.0.0-rc1-armeabi-v7a.apk · 48.5 MB SHA-256: 206e595f6c515e33e3841231bc005f3845f2c80a160ad26b3fe90f4a5490b6c8
Download the APK

What you need

  • Android 8.0 or later.
  • For the on-device assistant: a 64-bit phone sold with 8 GB of memory or more, and about 3 GB of free space.
  • A one-time download of the assistant's language model, about 2.4 GB. Wi-Fi recommended; the app asks before it starts.

Android asks before installing an app from outside Google Play; that's expected. Every file, the checksums and the release notes are on the GitHub release page.

See it work

On its own, the app is an assistant and a player for what's on your phone. Connected to a Domovoi server at home, it runs the whole house.

The on-device assistant answering two questions, with the label "on this phone"
The assistant answers on the phone.
The music screen listing albums
Your music, with or without a server.
Room mode's explanation screen, listing what changes before a phone becomes a room
Room mode explains itself before a spare phone becomes a room.
The screen for connecting to a Domovoi server
Connect it to your Domovoi server.

What it does

  • Answers typed or spoken questions with a language model running on the phone, and reads the answer aloud.
  • Works with no server, and in airplane mode once the model is on the phone.
  • Plays the music and videos on your phone, and shows its photos and the folders you choose.
  • With your Domovoi server: music in every room, radio, podcasts, timers, drop-in like an intercom, and room mode for a spare phone.

What it doesn't

  • The assistant can't see your photos, files, contacts or location. It sees the conversation and nothing else.
  • The phone's assistant doesn't listen for a wake word. The mic opens when you tap it and closes when you stop talking.
  • It doesn't set timers or control music yet. In this first version it's a conversation.
  • No account, no cloud fallback, no analytics, no ads and no crash reporting.

For the whole house

Put a Domovoi server on a computer at home, and the app, the dashboard and a voice in every room all run from it. Your voice never leaves your network.

Your PC as the house's server

The Windows installer sets up the whole Domovoi server on a Windows 11 PC: speech, the language models, voices, your music library and the dashboard.

DomovoiSetup.exe · 3.5 MB SHA-256: 5f107a99ea284b9928fa2f40adab261c39f2eb30ab1e0c680bf5dd19a88ac0e4
  • Windows 11 22H2 or later (64-bit), with virtualization turned on in the firmware.
  • 16 GB of memory and 40 GB free, ideally on an SSD. An NVIDIA GPU helps but isn't needed.
  • About 10.5 to 13.5 GB to download during setup, most of it the AI models.
  • The installer isn't code-signed yet. Turn Smart App Control off, and when Windows says “Windows protected your PC”, choose More info, then Run anyway.
Download for Windows

The full Windows guide. On Linux, one script installs it all on Ubuntu 26.04: the Linux guide.

A voice in every room

Any room can have Domovoi: a Raspberry Pi speaker, a spare Linux or Windows laptop, or an old phone or tablet running this app in room mode.

Add one from your server's dashboard under Settings, Satellites. It joins with a one-time approval code, and then it hears the wake word, answers, plays music, rings timers and works as an intercom.

  • Keep laptops and phones on a charger, on a hard surface, with a charge limit if they have one.
  • A phone or tablet becomes a room through this app, with nothing else to install.
Set up a room

Private by design

Coders Farm collects nothing from the app.

The assistant hears and answers on the phone, and audio is never saved.

Everything else talks only to your own Domovoi server, on your home network.

Read the app's privacy policy

Built in the open

MIT licensed, with 1,100+ commits and more than 9,000 automated tests since July 2026. Built with AI coding agents, held to tests, a written security model and real releases.

Want to build things like this? Start free at learn.codersfarm.org.

See the code on GitHub

Stay in the loop

Get an email when Domovoi reaches Google Play and when a new release is out. Nothing else, and you can leave any time.

Get updates by email

Talk with us on Discord

Questions

Does it need the internet?

Once, to download the assistant's model (about 2.4 GB). After that the assistant answers in airplane mode. Your own music and videos play with no connection at all.

Android 8.0 or later. The on-device assistant needs a 64-bit phone sold with 8 GB of memory or more; older and 32-bit phones get everything else.

No. The assistant and your phone's own music, videos and photos work without one. A server adds music in every room, timers, the intercom and more. Set one up on a Windows PC or Linux.

Yes: no ads, no subscription, and no data sold. Coders Farm is a nonprofit, and donations pay for it. Support the work.

Android asks before installing any app from outside Google Play. Allow it for your browser or file manager, install Domovoi, and turn the setting off again if you like. To be sure the file is ours, compare its SHA-256 with the one above.

Coders Farm, a 501(c)(3) nonprofit in Lansing, Michigan that teaches people to code for free. In Slavic folklore a domovoi is the household's guardian spirit, often a cat; ours lives in your network. About Coders Farm.

Back to top