Privacy

Natterling stores as little as it can, sells nothing, deletes everything on request.

What we store

• •Without an account: progress (XP, streak, finished lessons) stays on your device and never reaches our servers.
• •With one: email + hashed password, and a copy of that progress so it follows you between devices.
• •If you send feedback: the message you wrote.

The AI practice partners

Roleplay messages are sent to OpenAI to generate your partner's replies and feedback. We don't store your practice conversations: they live only on your device and are gone once you finish the lesson or close the app.

What we don't do

• •No selling, no ad trackers, no reading your words.

Deleting everything

Signed in? Your account page has a "delete my account and all progress" button. Not signed in? Clearing your browser data removes everything.

Questions

Use the feedback page. A real person reads it.