Terms of Service

The boring-but-important rules for using FastBro. By using the app you agree to these terms.

Effective: 1 September 2026

1. What FastBro is

FastBro is a fasting tracker and intermittent-fasting companion. It lets you record fasting sessions, log meals, earn XP, unlock badges, and (optionally) compare your progress with friends. The app is provided to you free of charge as a "hobby" SaaS product — it is not a medical device, clinical tool, or commercial weight-management service.

You are responsible for how you use the app. Nothing in FastBro constitutes professional medical, nutritional, or psychological advice. See /legal/health-disclaimer for the full medical caveat.

2. Eligibility

You must be at least 18 years old to use FastBro. If you are under 18, do not use FastBro without a parent or legal guardian's involvement. If you have an active medical condition or are pregnant, nursing, taking medication, or have a history of an eating disorder, talk to a clinician before using any fasting protocol — see the Health Disclaimer for the full list of caveat conditions.

3. Account & data

FastBro is local-first: your fasting history, calorie log, Ledger, and Lab Notes are stored in your browser by default and never leave your device unless you opt in to the Supabase cloud sync feature. The app does not require a name, birthdate, email, or any other personal identifier to start using it — your account is generated as an anonymous Supabase auth user the first time you open the app.

You can export every byte of your data as JSON from Settings → “Export my data” at any time. You can permanently delete your account and all associated rows from Settings → “Delete my account”. Account deletion cascades through every table we control (RLS-enforced) and is irreversible.

4. What you cannot do

  1. Don't use FastBro to harm, harass, stalk, or impersonate other people.
  2. Don't post profanity, hate speech, or content that's defamatory, obscene, or unlawful in your jurisdiction via the in-app feedback form.
  3. Don't reverse-engineer, decompile, or attempt to extract the source code of the FastBro web app in order to republish or resell it.
  4. Don't bypass or probe the Cloudflare security headers, CSP, or rate limits on the Sync / API endpoints — they exist to protect the service for everyone.
  5. Don't use FastBro as a substitute for emergency medical care. If you feel any of the warning signs listed in the Health Disclaimer, contact emergency services.

5. User-generated content

The only piece of user-generated content FastBro ships today is the in-app Feedback form (Category + Message). Your submissions are stored in a Supabase table with RLS-locked SELECT access — only the FastBro team can read them. Please don't include personal data about yourself or other people in feedback messages; we have no way to clean that up before engineers read it for triage.

6. Intellectual property

FastBro's source code, branding, illustrations, badge artwork, and Lab Notes content are owned by the FastBro project. You retain full ownership of any data you put into the app (your fasting history, your calorie log, your Ledger entries, your Lab Notes unlocks once collected). We do not sell or sublicense your data.

7. Termination

You can stop using FastBro at any time. To permanently remove your account and synced data, use Settings → “Delete my account”. We reserve the right to suspend or terminate accounts that violate section 4 above; in that case we will export your data to you first so you can keep your progress.

8. Changes to these terms

We may update these Terms as the app evolves. The effective date at the top of this page reflects the current version. Material changes (anything that meaningfully changes your rights or obligations) will be announced in the Settings → About card at least 14 days before the new terms take effect.

9. Disclaimers & liability

THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT ANY WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, OR THAT IT WILL MEET YOUR REQUIREMENTS.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE FASTBRO PROJECT AND ITS CONTRIBUTORS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES (INCLUDING LOST DATA OR LOST XP / BADGE PROGRESS) ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF THE APP, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Nothing in these terms excludes or limits any liability that cannot be excluded or limited under applicable law (e.g. fraud, death, or personal injury caused by negligence).

10. Contact

Questions, comments, or formal notices about these terms can be sent to Privacy.appsss@proton.me. We aim to acknowledge within 14 days.