What happens if I stop using Gretl?

Nothing, for three months. After 90 days without opening the app we email you to say the account is scheduled for deletion, and you get 30 more days after that. Opening the app in the meantime cancels it completely — there's nothing to click and no setting to find.

If you'd like a copy first, Settings → Export my data gives you the lot as spreadsheets. If you've ever subscribed, your account is never deleted this way.