Terms

Updated 17 September 2026

These are the terms for the CottonDB apps and this website. They are short because there is no service to subscribe to: the software runs on your own machines.

What CottonDB is

CottonDB is free software: a Mac app that runs a personal database server and an iPhone app that connects to it. You install it, you run it, and the data it holds is yours in every sense, including the ordinary sense that it is on your disk.

Price

CottonDB is free to use, for anyone, with no paid tier. Nothing here creates a subscription, a licence fee, or an obligation to pay. Contributions to the people who build it are welcome and never required.

Model calls made with an API key you supply are billed by that provider under its own terms. CottonDB does not bill you and does not see the bill.

Your content

Everything in your database is yours. CottonDB claims no licence over it and never receives a copy. What you choose to expose to an assistant is your decision, and you are responsible for what you authorise an assistant to read or change.

Connected assistants

An assistant you connect can read your data and, if you tick the write checkbox when approving it, create and change records. It acts under its own provider's terms once your data reaches it. Review what you have connected from the app; revoke anything you no longer want.

No warranty

CottonDB is provided as it is, without warranty of any kind, express or implied, including fitness for a particular purpose. It is built by one person; things change, and some of them break. Keep a second device joined, so your data lives in more than one place, and keep the recovery key the app shows you.

To the extent legally permissible, the makers of CottonDB are not liable for any loss arising from its use, including lost data, missed reminders, or actions taken by an assistant you connected.

Support

None is promised. The code is open source; issues are welcome, feature pull requests are not, and there is no promise of help running it anywhere but on your own Mac. Email reaches hello@cottondb.com and is read, without a service level.

This website

The site is informational. The one thing it can store is an email address you submit to be told when the iPhone app is out; see Privacy. Do not submit an address that is not yours.

Changes

These terms change when the software does. The date at the top is the version.