A personal AI agent that gets things done

It remembers, follows up, and works for you — on your iPhone or Android phone, on your Mac, and on a cloud computer that keeps going after you close the app.

Join the iPhone beta Download for Mac Download for Android ★ Star on GitHub

Free, with the source on GitHub. Needs a Volcano Ark API key with Managed Agents.

A short weekend plan in a side chat, ending with one question — **A plan, then a question.** A short plan, plus the one question that makes it fit you.

Long-press menu on a reply with reactions, Reply, Copy, Select, Share and Save to Library — **Long-press a reply.** React, reply, copy, share, or save it to your Library.

Ideas: ready-made tasks to hand to the assistant — **Start from an Idea.** Ready-made tasks to hand straight to the assistant.

Goals with categories to start a new goal — **Goals that grow.** Pick a category and get a plan that keeps improving.

Connectors: Apple Health, Calendar, Reminders, Contacts and Lark — **Connect what you use.** Apple Health, Calendar, Reminders, Contacts and Lark.

Make it yours. Bubble colors, avatar size, light or dark.

What it can do

One assistant across your devices. Conversations, memory, goals, and reminders follow your Open Muse account.

Your health, on demand

Ask “how did I sleep this week?” and it reads Apple Health on your iPhone, or Health Connect on Android, right then — steps, workouts, sleep, heart rate, weight. It never makes up a number it could not read.

Your Mac, hands-on

With your permission it looks at the screen, opens apps and files, clicks, types, and scrolls — in any app. Every action waits for your approval unless you allow it ahead of time.

Lark (Feishu), end to end

Sign in once, then ask in plain language: brief me before my next meeting, turn today's group chat into tasks, write up yesterday's meeting notes.

A cloud computer that keeps working

Each workspace has its own sandbox with web search, a real browser, a terminal, and files. Hand over a task, close the app, and the result is waiting when you come back.

Remembers and follows up

Keeps what matters in memory you can read and edit, turns goals into plans and checks in on them, and reminds you once, daily, weekly, or monthly.

A Feed and Ideas of your own

Morning updates on the topics you choose, each with a source, and ready-made tasks drawn from your goals and recent conversations.

A weekly reminder and a saved preference, with the assistant's editable SOUL and MEMORY — **Remembers and reminds.** One sentence sets a weekly reminder and saves a preference.

An approval card before the assistant uses the Mac — **Uses your Mac — after asking.** Allow once, allow for this chat, or decline.

A personal Feed with sources — **A Feed of your own.** Updates on the topics you choose, each with a source.

After a declined request, the assistant answers in the chat instead — **No means no.** Decline, and it helps in the chat instead.

Quick Chat over any app — **Always at hand.** A small chat card over whatever you are doing.

Computer use settings — **You set the limits.** Permissions, blocked apps and folders, in one place.

Built to be trusted

Asks first

Using your Mac or reading your health data waits for your OK unless you allow it ahead of time. Calendar and location ask every time.

No pretend answers

Without a working connection the app says so. It never generates a simulated reply.

Your key, your workspace

The apps call Volcano Ark directly with your own API key, stored encrypted for your account. Accounts sharing a key still get separate workspaces and memory.

Memory you can see

Your assistant's name, persona, and remembered facts are plain documents you can open, edit, or clear.

Open source

Everything in Open Muse — the iPhone, Android, Mac and web apps and the service behind them — is open source at github.com/chyroc/open-muse. If it is useful to you, a star helps more people find it.

★ Star on GitHub42 Build it yourself

Get started

iPhone

Join the public beta on TestFlight, register with an email and password, then connect your Volcano Ark API key in Settings.

Android

Download the app (version 0.2.0, 11.8 MB) and open it to install; Android asks you to allow installs from your browser the first time. It needs Android 9 or later, and Android 14 or later for Health Connect. The download comes from a server near you; you can also pick mainland China or global.

SHA-256 3802949ecfcd47f956230c0f752a2698f79c46ae7ca5c023f84cb1b7b6fc4713

Mac

Download the app (version 0.2.0, 1.4 MB), open the disk image, and drag Open Muse to Applications. It is signed and notarized by Apple, and runs on macOS 14 or later on Apple silicon and Intel Macs. The download comes from a server near you; you can also pick mainland China or global.

SHA-256 92cf7b8c488db294610f12128f7c5edb7395d5f106a3cc1b2d3bea3416f701d2

Web

Build it from the source on GitHub; the development guide covers it.

What it costs

The apps are free. Model and cloud usage is billed to the Volcano Engine account that owns your API key.