Turnstone Review: Free AI Teammates That Run on the AI Subscriptions You Already Pay For

Grok Bot showed what an AI teammate can do — but it runs on one company's meter, with credits that run out. Most people already pay for ChatGPT, Claude, or another AI plan, and none of those plans come with a team of agents that remembers how you work, keeps a schedule, and passes jobs between each other.

Turnstone is the model-agnostic alternative: free forever on your Mac, it turns the AI subscriptions you already have into a team of agents. Each job gets its own agent, each agent keeps its memory on your computer, and you can switch models mid-conversation without losing anything.

What is Turnstone?

Turnstone is a free Mac app that gives every job its own AI agent. Sign in with the plan you already have — ChatGPT, Claude, Grok, or Cursor — or connect an OpenRouter key for Gemini and more, or run models locally with Ollama. Your agents use the web like you do, work in their own browser tabs, keep schedules, and hand tasks to each other, reporting back in your chat.

Turnstone launched at #2 on Product Hunt on November 6, 2026, and is backed by Y Combinator. The Mac app is free forever; an optional Cloud plan keeps agents working 24/7 while your Mac is closed.

Key Features

1. One agent per job, each with its own memory

Give every recurring job its own agent — a morning-brief agent, a research agent, a follow-up agent. Each one remembers how you like the work done, and learns how you write, so you stop explaining yourself every time.

2. Use the AI you already pay for

Turnstone runs on your existing subscriptions: ChatGPT, Claude, Grok, or Cursor, plus OpenRouter keys and local Ollama models. Switch models in the middle of a conversation and your agent keeps its job and everything it knows. There is nothing extra to buy and no credit meter.

3. Agents with their own browser

Every agent works in its own tab of the Turnstone Browser — opening sites, reading them, and filling in forms while you watch. Agents can hand a task to another agent and the result comes back to your chat.

4. Schedules that run themselves

Say "every weekday at 9" and your agent saves a schedule, runs it, and reports back in your chat — a morning brief on your meetings, what you owe people, and anything urgent, delivered at 8:00 AM on weekdays when your Mac is on.

5. Your Mac, your data

Turnstone builds its memory locally and keeps it in a folder you can open. It does not train on anything you connect, and your files and memory stay yours — uninstall the app and your brain stays on your computer.

How It Works

Download Turnstone for Mac and sign in with an AI plan you already have. Create an agent for a job, tell it what to do in plain words, and connect only the sources you choose, one at a time — any source can be disconnected later and folders excluded before reading. Agents run on your Mac, pass work between each other, and report back in chat. If you want them on 24/7, Turnstone Cloud keeps them working while your Mac is closed and lets you message them from your phone.

Who Should Use Turnstone?

• People already paying for ChatGPT or Claude: Get a team of agents without buying another AI subscription.
• Founders and busy professionals: A chief-of-staff agent for briefs, follow-ups, and recurring jobs.
• Researchers and operators: Agents that browse, read, and fill in forms while you watch.
• Privacy-conscious users: Memory and data live on your Mac, with no training on your work.
• Teams tired of credit meters: No per-task credits — your agent runs on the plan you already have.

Pricing

Turnstone is free forever on your Mac, running on the AI subscriptions you already pay for. Turnstone Cloud costs $49 a month after a free month: it keeps your agents working while your Mac is closed and lets you message them from your phone. The Mac app stays free with or without Cloud.

Turnstone Pros and Cons

Pros

• Free on Mac, with no extra AI subscription or credit meter.
• Model-agnostic: ChatGPT, Claude, Grok, Cursor, OpenRouter, and local Ollama.
• Agents keep schedules, pass work along, and browse in their own tabs.
• Memory and data stay on your Mac; no training on your work.
• Backed by Y Combinator.

Cons

• Mac only for now; the free version stops when your Mac is closed.
• Cloud at $49 a month is a real cost for 24/7 agents.
• You still need a paid AI subscription (or key) of your own for the models.

Final Verdict

Turnstone's pitch is simple: you already pay for AI — you should not have to pay again to have it work for you. If you live on a Mac and want a team of agents that remembers how you work without another subscription or credit meter, Turnstone is the most generous way to get there.

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