Privacy Policy for ReefDrift — Reef Aquarium Parameter Logger (Android)

Last Updated: May 31, 2026 · Version 1.0

This Privacy Policy describes how ReefDrift — Reef Aquarium Parameter Logger ("ReefDrift", "we", "our", or "the app") handles information when you use our Android application. ReefDrift is designed to keep your aquarium data private and on your device.

The Short Version: ReefDrift stores all your tank data (parameters, readings, logs) locally on your Android device. We do not operate any servers that receive your reef data. No analytics SDK and no crash-reporting SDK are included. The app shows banner ads via Google AdMob. The Android version is completely free — no in-app purchases.

What we collect from you: Nothing automatically except what is required for ad serving (see Advertising section).
What you create stays where: On your device only (Room database, never transmitted to our servers).
No analytics, no crash reporting, no IAP.
Third parties involved: Google AdMob (ads). That's it.

1. Information You Provide

The following data is stored locally on your Android device only using the app's on-device Room database. It is never transmitted to our servers, because we do not operate any servers that receive reef data.

Tank Profiles: Tank name, volume, type (reef, FOWLR, freshwater, planted), and any notes you add
Parameter Readings: Values you log for ALK, CAL, MAG, NO3, PO4, pH, Salinity, Temperature, NH3, NO2, and any custom parameters
Dosing & Maintenance Logs: Dosing amounts, water change records, and equipment notes you enter manually
App Settings: Your preferences, notification schedules, and display choices
Exported Data: If you use the CSV export feature, the exported file contains your parameter history. You control where it goes via the Android share sheet; we do not receive a copy.

Android-Specific Storage: All data is stored in a Room (SQLite) database on your device, sandboxed within the ReefDrift app. Android's app sandboxing prevents other apps from reading ReefDrift's database. No cloud sync is performed by the app.

2. Advertising

The Android version of ReefDrift is completely free and shows banner ads. There are no in-app purchases or subscriptions on Android.

ReefDrift uses Google AdMob (AdMob App ID: ca-app-pub-1981172639334201~9646229803) to display banner advertisements. AdMob may collect and use the following information to serve ads:

Advertising ID (GAID): Google's resettable advertising identifier on Android, used to personalise ads and measure ad performance. You can reset or opt out of ad personalisation in Settings > Privacy > Ads on your Android device.
IP address and general location (country/region level, used by AdMob for ad targeting and fraud prevention)
Device model and OS version (used by AdMob for ad rendering and frequency capping)
Interaction data (whether you viewed or tapped a banner ad, used for billing and fraud prevention)

Google UMP Consent (GDPR/CCPA): When you first launch the app, a Google User Messaging Platform (UMP) consent form is shown if you are in a region subject to GDPR or CCPA. This form lets you review and adjust your ad personalisation choices. You can change these choices at any time in the app's Settings screen.

Google's use of data is governed by Google's Privacy Policy and Google AdMob's EU Consent Policy.

3. What We Do NOT Collect

ReefDrift is built to collect as close to zero data as possible. Specifically, the app does not collect or transmit any of the following:

❌ Analytics (no Firebase Analytics, Mixpanel, Amplitude, or similar)
❌ Crash reports to third parties (no Crashlytics, Sentry, Bugsnag)
❌ Your reef data — your tank readings and logs never leave your device unless you explicitly export them via the share sheet
❌ Account information — ReefDrift does not require sign-up, email, or any account
❌ Precise location data (we do not request GPS or fine location)
❌ Contacts, Camera, or Microphone

4. Android Permissions

ReefDrift requests the following Android permissions:

POST_NOTIFICATIONS (optional, Android 13+) — used to send you reminders to test your tank parameters on a schedule you configure. Notification content is generated locally on your device. No notification data is sent to our servers. You may deny this permission and the app will function normally without reminders.
SCHEDULE_EXACT_ALARM — used to schedule parameter reminder notifications at precise times you set. This permission allows the app to fire alarms at exactly the time you request (e.g., "remind me at 8 AM every day"). No data leaves your device as a result of this permission.
INTERNET — required for Google AdMob to fetch and display banner advertisements.

5. Data Sharing

We share data with the following party only:

Google AdMob — receives advertising-related data (Google Advertising ID, IP address, device signals) to serve banner ads. See Section 2 for details.

We do not sell your personal data. We do not share your reef parameter data with any third party. There are no in-app purchases on Android, so no payment processors are involved.

6. Your Choices

Opt out of personalised ads (GAID): Go to Settings > Privacy > Ads on your Android device and tap "Opt out of Ads Personalization" or reset your Advertising ID.
GDPR/CCPA consent: You can review and update your ad consent choices in the app's Settings screen at any time.
Notifications: Disable parameter reminder notifications at any time in Android Settings > Apps > ReefDrift > Notifications.
Delete your data: Uninstall the app from your device to permanently remove all locally stored data.

7. Children's Privacy

ReefDrift is rated Everyone on Google Play. We do not knowingly collect personal information from children. The app does not require any account or personal information from any user regardless of age. AdMob is configured in accordance with Google Play's Families Policy requirements.

8. Your Rights (GDPR / CCPA)

Right to access: All your reef data is on your device, accessible at any time inside the app.
Right to deletion: Delete individual readings, tanks, or uninstall the app — your data is gone from your device immediately.
Right to portability: Use the in-app CSV Export feature to take your parameter history with you in an open format.
Right to opt out of sale: We do not sell data; nothing to opt out of.
Ad personalisation opt-out: See "Your Choices" above. For rights related to Google's data processing, contact Google via their Privacy Policy.

9. Changes to This Policy

If we change how ReefDrift handles data — for example, adding cloud sync or changing our ad partner — we will update this Privacy Policy and update the "Last Updated" date at the top. For material changes, we will surface a notice within the app on your next launch.

10. Contact

Questions or concerns about this Privacy Policy?

Email: atechmobileapp@gmail.com