Privacy Policy
Last updated: September 27, 2026
- Hydrominder has no accounts. You never sign up or give us your email.
- Your water log, reminders and settings are stored only on your device. We have no server that receives them.
- We use Google AdMob to show ads in the free version and RevenueCat to handle the optional ad-free subscription. Hydrominder has no analytics or crash reporting.
- Ads are requested as non-personalized. On iPhone and iPad, the app asks for permission before your advertising identifier can be used.
This policy explains what information the Hydrominder mobile app ("Hydrominder", "the app") handles on iOS and Android, why, and what choices you have. Hydrominder is published by Hangar Apps ("we", "us"). If you have a question, contact us at [email protected].
1. Information stored only on your device
The following data is saved locally in the app's private storage and is not uploaded to us:
- Water log: the amount, unit, date and time of each drink you record
- Reminders: reminder times, weekdays, amounts, optional notes and whether each reminder is on or off
- Settings: daily water goal, unit, language, and whether you have completed the introduction screens
- Simple counters: for example how many drinks you have added, so the free version knows when to show a full-screen ad
You can delete all of this at any time from Settings → Clear All Data in the app. Uninstalling Hydrominder also removes it. If you use your device's own backup (for example iCloud Backup or Google backup), that backup may include Hydrominder's data under your device settings.
2. Information handled by third-party services
Hydrominder includes two services from other companies. They may collect information from your device as described below and in their own privacy policies.
| Service | What it's for | Data it may collect |
|---|---|---|
| Google AdMob | Showing banner and full-screen ads in the free version | IP address, device and app information, ad interactions such as views and taps, and the advertising identifier (IDFA on iOS only with your permission, Android Advertising ID) for frequency capping, measurement and fraud prevention |
| RevenueCat | Processing and restoring the optional ad-free subscription | A random anonymous user ID, purchase and subscription details (product, dates, store receipt), device and app information |
Privacy policies of these providers: Google · RevenueCat
Tapping Privacy Policy, Terms of Service or Support in Settings opens this website in an in-app browser. Like any website, it is hosted by a provider (GitHub Pages) that receives your IP address and browser information to deliver the page.
3. Payments
The ad-free subscription is optional. Payment is handled entirely by the Apple App Store or Google Play. We and RevenueCat never see your card number or other payment details. We only learn whether a subscription is active so the app can stop showing ads.
4. Tracking, ads and your choices
- iOS App Tracking Transparency: on iPhone and iPad, Hydrominder asks for permission before your advertising identifier (IDFA) can be used. No ads are requested before you answer. If you decline, AdMob does not receive your IDFA. You can change this any time in iOS Settings → Privacy & Security → Tracking.
- Non-personalized ads: the app requests non-personalized ads, which are chosen based on context (such as the app itself) rather than your personal profile.
- Android: you can reset or delete your advertising ID in Android Settings → Privacy → Ads.
- Ad-free subscription: while your subscription is active, the app does not show ads.
5. Device features and permissions
- Notifications (optional): Hydrominder asks for permission to send notifications so your water reminders can reach you. These are local notifications scheduled on your device at the times you choose. No push token is created or sent to us. You can turn reminders off in the app or in your device settings.
- Home screen shortcuts: long-pressing the app icon offers quick actions such as adding water. They work entirely on your device.
- Hydrominder does not read Apple Health, Google Health Connect or any other health data, and does not use your microphone, camera, contacts, photos or location.
6. Why we process data (legal bases)
Where the EU/UK GDPR or Turkey's Personal Data Protection Law No. 6698 (KVKK) applies, we rely on:
- Your consent for tracking on iOS and for notifications. You can withdraw it at any time using the controls above.
- Performing our contract with you to provide and restore your subscription.
- Our legitimate interest in showing non-personalized ads that keep the free version available, and in answering your emails.
7. Retention
Data stored on your device stays there until you clear it or uninstall the app. Advertising data is kept by Google for a limited period under its own retention settings. Purchase records are kept as long as needed to restore your subscription and meet legal and tax obligations. If you email us, we keep the conversation only as long as needed to help you.
8. International transfers
Our service providers may process data in the United States and other countries. Where required, they use recognized safeguards such as the European Commission's Standard Contractual Clauses.
9. Children
Hydrominder is a general-audience wellness app and is not directed at children under 13, or under the minimum age required in your country. We do not knowingly collect personal information from children. If you believe a child has provided information through the app, please contact us and we will help remove it.
10. Your rights
Depending on where you live (for example under GDPR, KVKK, or California's CCPA/CPRA), you may have the right to access, correct, delete, or receive a copy of your personal data, to object to or restrict processing, and to withdraw consent. Hydrominder does not have accounts, so your water log and reminders can be viewed and removed directly in the app. For data held by the providers above, email us at [email protected] and we will forward your request. We do not sell your personal information. You also have the right to complain to your local data protection authority.
11. Changes to this policy
If Hydrominder starts handling data differently, for example by adding a new service, we will update this policy before that version is released. The "Last updated" date at the top always shows the latest version, and important changes will be announced in the app or in the store release notes.
12. Contact
Hangar Apps
Email: [email protected]