Privacy by design

You do not need to tell us who you are.

You can sign up with a made-up username. We never require your real name, location, or identifying details to use the platform. If you provide an email address, we use it only for account access and support.

We never see it, touch it, or store it.

Health data is stored locally on your device and encrypted. You can export encrypted data to another device or delete it at any time.

Your conversations with AI are private end-to-end.

Chats sent to the AI are end-to-end encrypted, meaning only you can read them.

The AI runs privately without sending your data to any external AI provider or cloud service.

No third party, including us, can access what you ask or what the AI responds.

Conversation history is stored locally on your device, you can delete it at any time.

Only basic, anonymous usage signals needed to keep the app working well.

We may collect anonymous technical data such as crash reports, performance information, and which features are used. This helps us fix bugs and improve the platform. It is not linked to your health data and is not combined with identifying details.

We hold no personal health data, so there is nothing to sell.

We do not sell, rent, or share personal information. The only exception is a legal obligation, such as a valid court order, in which case we can only provide the limited account information we actually hold, such as an email address if you gave us one.

Most rights are already met by design.

Because we collect so little, many access, correction, and deletion rights are handled directly through your in-app controls. For anything else please contact us.

If we make significant changes to this policy, we will notify you at least 14 days in advance and will not reduce your privacy protections without clear notice.

By using Catina, you confirm that you have read this policy. It forms part of our Terms of Service.