Open source · Apache-2.0 · Local-first

Voice, on your
own device.

VoxSign is a local-first voice AI platform. Hold to talk, let your machine listen, and only flip on the cloud when a session actually needs it. Your voice stays where it belongs — with you.

local-first default voice as input privacy by design open source
What it does

Speak. Your machine listens.

A calm voice layer between you and your devices — built on the open Harness runtime, not a black box.

Hold to talk

Press the big waveform button and speak. Release to send. No menus, no typing — just voice, the way you already talk.

Sessions, roles, domains

Run parallel conversations, each with its own role and domain. Work, personal, experiments — never bleed into one another.

Local ↔ cloud switch

One tap moves a session between your machine and the cloud. Green means on-device, red means routed out — you always know.

Local Cloud

Auto-named sessions

Threads title themselves from your first turns. No more "New chat 47" — just open the one you mean.

VoxSign Harness — the open runtime

The brains ship as Apache-2.0 software: session state, model routing, local/cloud transport, and the hold-to-talk protocol. Point it at your own model, your own endpoint, or your own server.

Explore Harness
Open source

The whole stack, in the open.

Apps, runtime, and server live in the Voxsign GitHub organization — every line under the permissive Apache-2.0 license. Fork it, audit it, run it your way. Voice infrastructure should not be a moat.

Privacy by design

Your voice is yours.

  • Speech is processed on-device before anything leaves the phone.
  • You choose, per session, whether to route through the cloud.
  • The runtime is open source — read the code, don't trust a claim.
  • No account required to use local models.
Get started

Take it for a spin.

Android builds are published straight from GitHub Actions. iOS is rolling out via TestFlight.

Android GitHub Releases

Download the latest APK from the VoxSign-Android releases page — built and signed by GitHub Actions.

Source: github.com/Voxsign/VoxSign-Android

iOS Coming soon

TestFlight openings will be announced here. The iOS source is already public — build and run it yourself from the repo.

Repo: github.com/Voxsign/VoxSign-IOS