Fastii — Terms of Use

Last updated: September 12, 2026

Acceptance

By using Fastii you agree to these terms. If you do not agree, delete the app.

What the app is

Fastii is a personal intermittent-fasting timer. You can start and end fasts, keep a streak, log water, and optionally log weight. Charts and summaries are based only on what you log.

Not medical advice

Fastii does not provide medical advice, diagnosis, or treatment. It does not claim to cause weight loss or improve health. Never delay seeking care because of something in this app. Talk to a qualified clinician before you change how you eat, especially if you are pregnant, under 18, or have a medical condition.

Subscription

Fastii is free to download. After setup, an auto-renewing subscription unlocks the timer, history, and streaks. There is no free diary. Price and length are shown before purchase. Subscriptions renew unless cancelled at least 24 hours before the period ends, and are managed in your Apple ID settings.

Acceptable use

Do not misuse the app, attempt to reverse engineer it, or use it in any unlawful way.

Warranty and liability

The app is provided "as is" without warranties of any kind. To the maximum extent permitted by law, DEVLOGGIC S.A.S. is not liable for damages arising from use of the app.

Contact

DEVLOGGIC S.A.S.
Email: support@devloggic.com