Privacy Policy
We only ask for the information that is strictly necessary to provide you with the H2flow hydration experience. This policy explains which data we collect, how we use it, and the rights you have to control your information.
Data we collect
H2flow is designed to operate with minimal personal information. To create and secure your account we collect:
- Email address – required to create your profile, authenticate you, and send essential service emails such as password resets.
- Fasting and hydration logs – usage data you add (for example, fasting sessions, water intake, planned fasts) so the app can personalise your experience. These entries are tied to your account and you can edit or delete them at any time.
We do not ask for your name, physical address, or any other identifying details inside the app. Payment information is processed exclusively by Apple and RevenueCat; we never see or store card details.
How we use your data
- Authenticate you securely when you sign in on a device.
- Sync your fasting history, hydration goals, reminders, and planned fasts across your devices.
- Process subscription purchases through RevenueCat (which receives anonymous user identifiers and Apple purchase receipts).
- Provide essential account support such as password resets or account recovery.
We never sell your personal information and we do not use it for advertising or profiling purposes. No analytics or advertising SDKs are bundled with the app.
Third-party services
H2flow relies on the following third-party services that process data on our behalf:
- Firebase (Google) – authentication, database, and push notifications.
- RevenueCat – subscription management and purchase validation.
- Expo – push notification delivery.
Each provider is bound by their own privacy policies and security certifications.
Where data is stored & how long we keep it
Account information is stored securely in our managed Google Firebase infrastructure within the European Union. We retain your data only for as long as you maintain an active H2flow account. If you delete your account, associated hydration entries are permanently removed from our systems within seven days.
Your rights & choices
- Access, correct, or delete your fasting and hydration data from within the app.
- Request a copy of the information linked to your account by emailing h2flowapp@gmail.com.
- Ask us to delete your account entirely by contacting us via email; we will confirm once the removal is complete.
We respond to privacy requests within seven days and complete verified deletion requests within the same timeframe.
Questions?
If you have any questions about this policy or how H2flow handles your data, contact us at h2flowapp@gmail.com.