Privacy

Last updated: 14 October 2026

Who we are

Diemly is run by Simon Nagy, Hungary. For anything about your data, write to privacy@diemly.app. For help with the app: hello@diemly.app.

Who Diemly is for

Diemly is for people aged 16 and over. By creating an account you confirm that you are at least 16. If you are under 16, please do not use Diemly. If we learn that an account belongs to someone under 16, we delete it and its data. If you think a child has an account, write to privacy@diemly.app.

What we store

• Your account: email, name, time zone, currency and a protected (hashed) version of your password.
• If you use Sign in with Apple: the Apple user ID Apple gives Diemly, the email Apple shares (this can be a private relay address if you choose Hide My Email) and your name if you share it. When you delete your account, we also ask Apple to disconnect Diemly.
• Your goals and everything you log.
• Health data, only if you turn it on: the values you allow from Apple Health (for example steps, workouts, sleep, weight, body fat, nutrition, water, mindful minutes), sent as daily totals.
• Data you send with an import key.
• Your friend connections and which goals you share.
• Challenges you make or join: the name, activity, dates and who is in it.

Why

Only to show you your goals and progress, and to show your friends the goals you choose to share. Friends see progress and streaks for shared goals, never the numbers you log or your Health data.

Challenges are the one place others see a number: when you join a challenge, its members see your name and your total for that challenge's one activity between its start and end dates (for example "Anna: 182,000 steps"). In a competition this total comes from Apple Health. Diemly shows you this before you join, and you can leave a challenge at any time; members never see single entries, other goals or other Health data.

We do not sell your data, use it for advertising or marketing, or give it to data brokers. Health data is never used for anything except showing you your own progress.

Where it is kept

On Cloudflare's servers (our hosting provider), which process it on our behalf. Health data is not stored in iCloud.

Only the developer, Simon Nagy, can access the database, and only to help you when you ask for support or to fix a problem. Access is protected with two-factor login. Your data is never sold or used for advertising.

When we email you a code (to confirm your email or reset your password), the email is sent through Resend, an email delivery service. Resend receives only your email address, your first name and the email itself, and processes them on our behalf.

Your choices

• Turn Health data off at any time in Account; this deletes the Health data we hold.
• Download all your data from Account, in a file.
• Leave a challenge at any time; the others stop seeing your total.
• Delete your account from Account; this deletes your goals, logged data, Health data, friendships and challenges.
• Anything else, such as correcting data or asking what we hold: email privacy@diemly.app and we reply within 30 days.

Legal basis (EU/EEA)

We process account data to provide the service you signed up for, and Health data only with your explicit consent, which you can withdraw at any time. You can also complain to your local data protection authority.