Privacy Policy.
Last updated · June 20, 2026
1. Summary
The AquaTrack iOS app stores all of your data on your device. We do not operate servers for the app, we do not have user accounts, and the app does not collect, transmit, sell, or share any personal information. Nothing you log in AquaTrack leaves your iPhone, except — at your explicit request — through Apple HealthKit, which is itself an on-device store managed by Apple.
Separately, this website (aquatrack.club) uses Google Analytics to measure aggregate visitor traffic. Analytics cookies stay off until you consent to them. This is the only place any data is collected, it concerns website visits only — never your hydration data — and it is described in full in §8 (Website analytics).
If you want the short version, that is it. The sections below are the formal version required by the App Store and by privacy laws including the GDPR, UK GDPR, and the California Consumer Privacy Act (CCPA).
2. Scope
This policy applies to:
- the iOS application "AquaTrack" published under bundle identifier
com.posterumsoft.watercounterapp(§§3–7, 9–14), and - the AquaTrack marketing website at aquatrack.club (§8).
It applies to no other product or service.
3. Data we process on your device (app)
AquaTrack works entirely on your iPhone. The following data is created, stored, and processed locally:
- Hydration logs — the amount and type of fluid you log (water, coffee, tea, juice, etc.), with timestamps.
- Profile inputs — sex (biological), age, weight, height, activity level, wake and sleep times, climate, and similar profile fields you supply during onboarding or in Settings.
- Daily goal — calculated locally from your profile (see Scientific Core documentation in the app).
- Achievements, streaks, insights — derived from your logs by the app.
- App preferences — units (ml/oz), theme, notification settings, language.
- Purchases — your Premium subscription status is read from Apple's StoreKit at runtime; we never receive your payment information.
This data is stored in a local database on your device using Apple's SwiftData framework. We do not transmit, back up to our servers, or otherwise process this data outside your device.
4. Apple HealthKit
If you grant AquaTrack permission, the app reads from and writes to Apple HealthKit. Specifically:
- Reads: dietary water, dietary caffeine, body weight, exercise minutes — for the purpose of calculating your hydration goal and reconciling logs.
- Writes: dietary water and dietary caffeine entries you create in AquaTrack — so they appear in your Apple Health timeline alongside data from other sources.
In accordance with Apple's HealthKit terms (App Review Guideline 5.1.3):
- HealthKit data accessed by AquaTrack is not used for advertising, marketing, or other use-based data mining.
- HealthKit data is never sold or shared with third parties.
- HealthKit data is not stored in iCloud through AquaTrack.
- HealthKit data is used solely to provide hydration-tracking features on this device.
- Hydration and caffeine entries that AquaTrack writes to HealthKit are derived directly from the values you log in the app. We do not synthesize or fabricate values.
You control HealthKit access entirely through iOS Settings → Health → Data Access → AquaTrack. You may revoke individual data permissions or remove AquaTrack's access entirely at any time.
5. In-app purchases
AquaTrack offers Premium subscriptions and a one-time Lifetime purchase through Apple's StoreKit. When you purchase or restore a subscription:
- The transaction is handled entirely by Apple. AquaTrack never sees your name, billing address, email, payment card, or Apple ID.
- AquaTrack reads only the entitlement status (active/inactive, product identifier, renewal flag) from
Transaction.currentEntitlements, which Apple verifies on-device. - We do not maintain a server-side ledger of purchases.
For Apple's handling of your purchase data, see Apple's own privacy policy at apple.com/legal/privacy.
6. Notifications
AquaTrack uses local notifications (scheduled on your device) to remind you to drink water. We do not use remote push notifications. No push token is generated, and no notification metadata is sent to any server.
You can disable notifications at any time in iOS Settings → Notifications → AquaTrack, or by turning off reminders in the app (Settings → Reminders).
7. Third parties (app)
The AquaTrack iOS app contains no third-party SDKs, analytics frameworks, advertising networks, crash reporters, or telemetry libraries. The app does not share your data with any third party, because the app does not transmit your data — it stays on your device.
The only external systems the app interacts with are Apple's HealthKit (see §4) and Apple's StoreKit (see §5), both of which are governed by Apple's own privacy practices.
This is separate from the AquaTrack website, which uses one analytics service strictly with your consent — see §8.
8. Website analytics (aquatrack.club)
This section concerns the marketing website aquatrack.club only. It does not concern the iOS app, which collects nothing (see §§3, 7).
What we use. The website uses Google Analytics 4, a web analytics service provided by Google Ireland Limited ("Google"), to understand aggregate, anonymized visitor traffic.
Consent first. Analytics cookies are disabled by default. They load only after you accept analytics via the consent banner. We run Google Consent Mode v2 — analytics storage stays denied until you consent — and IP anonymization is enabled. We request consent for analytics only; we do not use Google's advertising signals (ad storage, ad personalization), and those stay denied at all times. If you decline, no analytics cookies are set and no identifier for you is created or stored; with Consent Mode active, Google still receives basic cookieless signals about the page request, used only in aggregate and never linked to you.
What is collected (only if you consent). Pages viewed and time on them, approximate location (country/region, derived from your anonymized IP address), device and browser type, the referring source that brought you to the site, and on-site interactions such as clicks on the "Download on the App Store" button. This is collected via Google Analytics cookies (e.g. _ga, _ga_*). We do not collect your name, email, precise location, or any hydration data through the website — the website has no login and no forms that capture personal data.
Why. To measure how many people visit, which content they read, and which pages lead to App Store visits, so we can improve the site. The data is used in aggregate; we do not attempt to identify individual visitors.
Legal basis. Your consent (GDPR Art. 6(1)(a)), given through the banner. You may withdraw it at any time (see "Your control" below).
Processor and international transfers. Google acts as our data processor for website analytics and may process the data on servers located outside the European Economic Area, including in the United States, under Google's own transfer safeguards (EU Standard Contractual Clauses and the EU–US Data Privacy Framework). See Google's privacy policy at policies.google.com/privacy and how Google uses data at policies.google.com/technologies/partner-sites.
Retention. User- and event-level analytics data is retained according to our Google Analytics configuration (up to 14 months), after which it is automatically deleted by Google. Aggregated reporting may persist longer in non-identifying form.
Your control. You can decline analytics in the consent banner. You can withdraw consent at any time using the "Cookie settings" link in the website footer, which reopens the banner and immediately stops analytics; to also delete any analytics cookies already stored, clear this site's data in your browser. You can also block analytics entirely with browser privacy settings or extensions. Declining or withdrawing does not affect your use of the website in any way.
9. Data retention and deletion (app)
Because all app data is stored locally on your device, retention of app data is controlled entirely by you:
- Delete a single log: swipe to delete on the Today screen or in the History view.
- Delete all AquaTrack data: uninstall the app. This removes the entire local database.
- Reset AquaTrack data while keeping the app: Settings → Reset.
- Delete HealthKit data: iOS Settings → Health → Browse → Water (or Caffeine) → Show All Data.
We retain no copies of your app data on any server, because none ever existed. Retention of website analytics data is described separately in §8.
10. Your rights
Under the GDPR, UK GDPR, and CCPA you have the following rights with respect to personal data we process about you:
- Access — to obtain a copy of the personal data we hold about you.
- Rectification — to correct inaccurate or incomplete personal data.
- Erasure ("right to be forgotten") — to have your personal data deleted.
- Restriction — to restrict our processing of your personal data.
- Portability — to receive your personal data in a structured, machine-readable format.
- Objection — to object to our processing of your personal data.
- Right against sale or sharing (CCPA) — we do not sell or share personal information.
For app data: because the AquaTrack app does not transmit your data off your device, we hold no copy of it. You exercise all of the above rights yourself, directly on your iPhone:
- Use the in-app History view to inspect and export your logs (CSV export — Premium feature).
- Use Settings → Reset to delete data.
- Use iOS Settings → Health for HealthKit data.
For website analytics data: you can prevent collection entirely by declining consent, and withdraw or delete it by clearing cookies or using browser controls (see §8). You may also exercise your rights regarding analytics data, including in respect of Google as processor, by contacting us at the address in §14.
If you wish to contact us about any of these rights, you may write to the address in §14.
11. Children's privacy
AquaTrack is intended for users aged 13 and older (16 and older in the European Economic Area, where local law sets a higher age of digital consent). The app is not directed at children below those ages, and the App Store age rating reflects this. We do not knowingly process data from children below those ages.
The app contains a non-medical disclaimer and is not intended to provide medical advice, diagnosis, or treatment, particularly to minors, pregnant users, or users with chronic medical conditions; please consult a qualified medical professional for individual guidance.
12. International users
The AquaTrack app does not transmit your data internationally — or anywhere else — because all app data remains on your device. No cross-border transfers occur for app data, and no transfer mechanisms are required.
For the website, if you consent to analytics, data may be transferred to and processed by Google outside your country, including in the United States, under Google's transfer safeguards described in §8.
13. Changes to this policy
We may update this policy from time to time. The "Effective date" at the top of this document reflects the most recent revision. Material changes will be reflected in the release notes of the corresponding App Store update, and the in-app "Privacy Policy" link will always point to the most current version.
14. Contact
For any questions about this policy or about AquaTrack's privacy practices, contact:
Pavel Turchenko
Email: [email protected]
You may also reach the same address through the in-app Settings → About → Privacy Policy link.
This document is available in English and Russian. In case of conflict between language versions, the English version governs.