ThinkHearth
In development · Android

One AI model.
Every app gathers round.

ThinkHearth keeps a single private AI model on your phone and lets your other apps share it. You download the model once, it runs on the phone itself, and nothing you type leaves the device.

Why share one model?

On-device AI models are several gigabytes each. When every app ships its own, your storage and memory fill up with copies of the same thing.

Today: one model per app

Each app downloads and loads its own copy.

App A App B App C Model Model Model

With ThinkHearth: one shared model

Apps ask ThinkHearth, which runs the one model for all of them.

App A App B App C ThinkHearth · Model

What it does

A small app that stays in the background and works only when another app asks it to.

Download once

One copy of the model, stored in one place, used by every app that supports ThinkHearth.

Private by design

The model runs entirely on your phone. Prompts and replies are never sent to a server.

You decide who uses it

The first time an app asks to use the model, ThinkHearth asks you to allow it. You can revoke access at any time.

Warm when needed

The model loads when an app needs it and unloads after a quiet spell, freeing memory for everything else.

For app developers

ThinkHearth gives Android apps one standard way to use on-device AI. Your app connects to ThinkHearth's service instead of bundling a model. If ThinkHearth isn't installed, your app can fall back to its own model or hide its AI features.

Planned interface

  1. Ask for permission to use the model; the person approves your app once.
  2. Check the model: its name, how much text it can take in, and whether it accepts images.
  3. Send a prompt and receive the reply a few words at a time, with the option to cancel.

Sketch only

// The interface is still being designed.
// Names and details will change.
generate(
  prompt,
  options,   // max length, temperature
  callback   // onToken, onDone, onError
)

Privacy

ThinkHearth is built so that your words stay on your phone.

No cloud

All AI processing happens on the device. The only download is the model file itself.

No accounts

There's nothing to sign up for, and nothing identifies you.

No tracking

No analytics or advertising, and this website doesn't use cookies.

Status

ThinkHearth is being built now, starting with Android. This page will be updated as the app and its developer interface take shape.