Freemium
Added on Nov 07,2026
Turnstone is a Mac app that lets users run AI agents on the AI subscriptions they already pay for, rather than adding another model bill.
Users sign in with ChatGPT, Claude, Grok or Cursor plans, bring an OpenRouter or other API key, or run local models through Ollama. Agents can switch model in the middle of a conversation and keep their context.
It starts with a Chief of Staff agent that sets up other agents for each part of a job, such as outreach, writing or engineering. Each agent remembers how the user likes work done.
Key features include scheduled tasks, for example a weekday morning brief that runs when the Mac is on, a shared memory the site calls the Brain, and automatic switching to another model when one reaches its usage limit.
Turnstone is available for Mac, and the Product Hunt listing also mentions iPhone. The site says it is backed by Y Combinator and others.
Pricing: Turnstone is listed as completely free. Users still pay for their own AI subscriptions or API usage.
It is suited to founders, operators and developers who already use several AI services and want one agent workspace.
By the PowerfulAI.tools Editorial Team · Updated 7 November 2026 · Researched with AI assistance and checked against the official Turnstone website · How we review tools
Turnstone for Mac is $0 forever. The upcoming Turnstone Cloud is listed at $49 a month, with the first month free for the first 1,000 people.
Pricing checked against the official Turnstone website in November 2026. Prices can change, so confirm before you buy.
Founders and solo operators on a Mac who want a team of AI agents for outreach, writing and briefings, running on AI plans they already pay for.
Turnstone is made by Crow Inc. and has announced funding led by Y Combinator.
The site says connected app data is read only to build your own memory and no model is trained on it. Agents, chats and memory sit in a folder on your Mac that you can open.
Popular alternatives to Turnstone include Voilà, Hiding AI and Flowith. Compare their pricing and what each is best for below.
| Tool | Pricing | Best for |
|---|---|---|
| Voilà | Freemium | Professionals who read and write a lot online and want an AI assistant for email, summaries and rewrites inside the brow... |
| Hiding AI | Free Trial | Job seekers and remote workers who want discreet AI notes, transcripts and answers on their desktop during video calls. |
| Flowith | Freemium | Creators and knowledge workers who prefer a visual canvas over a linear chat for working with several AI models. |
| SaveDay | Freemium | Researchers, students and heavy readers who save lots of articles and videos and want to find them later by describing w... |
| NotebookLM | Freemium | Researchers, students and analysts who want to question and summarise a set of their own sources. |
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