Legal

The short version, in plain language.

No sub-clauses hiding in a wall of capitals. If something here is unclear, ask and we will rewrite it.

Privacy policy

01What we store: Your Google account id, name, email, and avatar URL. The diagrams you submit, the exported image, your written or transcribed walkthrough, and the evaluation returned by the model.
02Your Gemini API key: A key you enter yourself is kept in your browser's localStorage and sent only with the evaluation request you trigger. It is never written to our database.
03Who else sees it: Diagram data is sent to Google's Gemini API for evaluation, and payment events are handled by Dodo Payments. We do not sell data or run advertising trackers.
04Removing your data: Sign in and request deletion, or email us from the address on your account. Submissions are removed immediately and the account record is purged within thirty days.

01What the service is: A practice tool. Scores and critiques are generated by a language model and are intended as feedback, not as an assessment of your ability, and not as professional advice.
02Plans and billing: Free accounts include three lifetime evaluations. Pro and Max renew monthly through Dodo Payments until cancelled. Cancelling stops the next charge and leaves the current cycle intact.
03Fair use: Do not submit other people's confidential designs, attempt to overload the evaluation endpoint, or resell generated feedback. Accounts that do may be suspended.
04Availability: The service depends on third-party model and payment providers and is offered as-is, without warranty. We aim to keep it up, but we do not guarantee uninterrupted access.

Last updated October 2026