Your data

Your name, your email address and the timezone your browser reported, so the morning note arrives at 06:45 where you are.

What you log: meals, the photos you send, drinks, weigh-ins, body composition readings, and the training that arrives from the services you connect. Calvin’s own notes back to you.

Your targets — calories, protein, the deficit you chose — and the connections you set up, whose access tokens are encrypted.

To work out your budget for the day, keep the trend, and write you four lines each morning. That is the whole product, and every field above feeds it.

Calvin is a coach, not a clinician. Nothing here is a diagnosis, and nothing on Corner is medical advice — if a number worries you, it is a doctor you want, not an app.

Nobody who is not running Corner. The app is hosted on a single server we rent; photos sit in Cloudflare R2; a vision model reads the photos you send so it can name the food, and an error reporter sees crashes, not your weight. No advertising, no analytics profiles, no selling any of it — ever.

Your data is yours and nobody else’s: everything Corner stores is scoped to your account, and no other user can see it.

Ask and it goes. Say the word to Calvin or email us, and your account, every log, every photo and every connection is deleted — not hidden, not archived. Backups age out within a month.

You can also ask for a copy of everything, or have a single day fixed or removed.

While you have an account, because a trend is only useful with history behind it. After you delete it, it is gone.