Privacy Policy

WaterReminder for iOS and Apple Watch · Effective date: October 1, 2026

WaterReminder is built so that your data stays yours. The app has no accounts, no ads, no analytics, and no tracking. This policy explains what data the app handles and where it lives.

What data the app stores

• Hydration log — drinks you record (type, volume, time), your daily goal, custom drinks, streaks, and app settings.
• Goal calculator inputs — if you use the optional goal calculator (weight, sex, activity level, climate), these values are used only on the device to compute a suggested goal and are not saved. Only the resulting daily goal is stored.

All of this is stored on your device and, if iCloud is enabled, synchronized through your private iCloud database (CloudKit) so your iPhone and Apple Watch stay in sync. The private iCloud database is accessible only to your Apple ID. We — the developer — have no access to it and operate no servers of our own that receive your data.

Apple Health (HealthKit)

With your permission, WaterReminder writes the drinks you log to Apple Health as water intake. It does not read your Health data: it never accesses entries made by other apps or devices. To keep Health in step with your log, it only checks the water entries it wrote itself.

• What is written: the drink's effective hydration volume — the logged volume adjusted by the drink type's hydration coefficient, and never more than the volume you actually logged (for example, 250 ml of coffee is recorded as 225 ml of water; alcoholic drinks are not recorded). The original logged volume and drink type are kept in the Health sample's metadata.
• Who writes: WaterReminder on iPhone or iPad writes to Health. The Apple Watch app does not write to Health itself — drinks logged on the watch are written by your iPhone. Each drink is a single Health entry that is updated when you edit the drink.
• No Health data in iCloud: the app never imports anything from Health, so no Health data is stored in the app, synchronized through iCloud, or sent anywhere else. Only the app's own hydration log is synchronized, as described above.
• Health integration is used only to provide the app's hydration-tracking features; it is never used for advertising, marketing, or data mining, and never sold or shared with third parties.
• You can turn off access at any time in Settings → Privacy & Security → Health → WaterReminder. Turning off access stops new entries but does not remove entries already written; see Data export and deletion below.

What we do NOT collect

• No account or registration — we don't know who you are.
• No analytics or crash-tracking SDKs, no advertising identifiers, no tracking of any kind.
• No location data, no contacts, no personal identifiers.

Purchases

Premium subscriptions and the Lifetime purchase are processed entirely by Apple through the App Store. We never see your payment details. The app checks your purchase entitlement locally through Apple's StoreKit framework.

Notifications

Hydration reminders are local notifications scheduled on your device. They are not sent from a server and involve no data transmission.

Data export and deletion

• Export: you can export your full hydration history as CSV or JSON at any time from Settings (Premium feature). The export is generated locally and shared only where you choose to send it.
• Deletion: deleting the app removes its local data from that device. To also remove synced data, delete WaterReminder data in Settings → Apple ID → iCloud → Manage Storage.
• Health entries: first turn off WaterReminder's Health access in Settings → Privacy & Security → Health → WaterReminder on each iPhone or iPad where you use the app (or delete the app there) — otherwise it re-creates entries for drinks from the last 7 days. Then, in the Health app, tap your profile picture → Apps → WaterReminder → Delete All Data from “WaterReminder”.
• Because we hold no copies of your data, no request to us is needed — the data is under your control.

Children

WaterReminder is not directed at children under 13, and we do not knowingly collect any personal information from anyone — including children.

Changes to this policy

If the app's data practices ever change, this page will be updated and the effective date revised before the change ships.

Contact

Questions about privacy: contactgribproductions@gmail.com