Privacy Policy & Terms of Use

Effective date: July 19, 2026 · Applies to the MiauWater app for iOS

1. Who we are

MiauWater (“the app”, “we”) is a water-intake tracking app for iOS. This document explains what data the app handles, and the terms under which you may use it. For any questions, contact us at [email protected].

2. Data that never leaves your control

• Your profile (name, avatar, weight, activity level, health modes) and your water logs are stored locally on your device and — if iCloud is enabled — in your private iCloud (CloudKit) database. This database belongs to your Apple ID; the developer has no access to it.
• Apple Health (HealthKit). With your permission, the app reads your workouts (to adjust your daily water goal) and writes your water intake to the Health app. Health data never leaves your device or your personal iCloud, is never sent to our analytics, is never used for advertising or marketing, and is never shared with third parties.
• No account is required. The app does not ask for your email, phone number, or any login.

3. Data collected automatically

To understand how the app is used and to fix crashes, the app uses Google Firebase (Analytics, Crashlytics, Remote Config). Firebase receives:

• Usage events — which screens and features are used (e.g. “water logged”, “reminder enabled”). Raw health values are never included in these events.
• Purchase events — the fact of a subscription purchase or restore and its plan (no payment details).
• Anonymous identifiers — a random app-generated ID (stored as a SHA-256 hash), the Firebase app-instance ID, and Apple’s per-vendor identifier (IDFV). None of these identify you personally.
• Crash and performance diagnostics — stack traces, device model, OS and app version, timings.

No tracking. The app does not use the advertising identifier (IDFA), does not show third-party ads, does not track you across other companies’ apps or websites, and does not sell or share your data with data brokers. Data processed by Firebase is covered by Firebase Privacy and Security and Google’s Privacy Policy.

4. Subscriptions and payments

The PRO subscription is an auto-renewable subscription processed entirely by Apple through the App Store (StoreKit). We never see or store your payment details. Payment is charged to your Apple ID account; the subscription renews automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel it anytime in your App Store account settings. Purchases can be restored with the “Restore purchases” button in the app.

5. Notifications

Water reminders are local notifications scheduled on your device. Their configuration stays on the device.

6. Data retention and deletion

• Delete account in the app (Settings → Delete account) erases all your data on the device and in your private iCloud database.
• Anonymous analytics and crash data are retained by Firebase for a limited period (up to 14 months for analytics identifiers) and then deleted or aggregated.
• To exercise data rights covered by your local law (access, deletion, objection), email us at [email protected].

7. Children

The app is not directed at children under 13, and we do not knowingly collect personal data from them.

8. Health disclaimer

MiauWater is a wellness tool, not a medical device. Water-goal recommendations (including health modes) are informational and do not constitute medical advice. Consult a doctor regarding your fluid intake, especially if you have a medical condition.

9. Terms of Use (EULA)

Your use of MiauWater is governed by Apple’s standard Licensed Application End User License Agreement (EULA). By downloading or using the app you agree to those terms and to this Privacy Policy.

10. Changes to this policy

We may update this document as the app evolves. The current version is always available at this page; the effective date above reflects the latest revision.