PRIVACY POLICY

Last updated: June 13, 2026

This Privacy Policy describes how ShiftTracker ("the app"), developed by Oleksandr Marchenko ("the developer", "I"), handles your information. ShiftTracker is a shift schedule calendar for people with rotating work schedules.

The core principle: your schedule belongs to you. ShiftTracker works fully offline, has no accounts or sign-up, and the developer never has access to your shifts, patterns, notes, or earnings data.

1. Information stored on your device

Everything you create in the app — shift types, rotation patterns, calendar day changes, notes, actual work times, hourly rates and reminder settings — is stored only in a local database on your device. It is never uploaded anywhere and the developer cannot see it. If you use the CSV or ICS export feature, the file is generated locally and shared only with the app you explicitly choose.

2. Usage analytics

The app uses Google Firebase Analytics to understand which features are used (as anonymous event names, counts and flags — for example, "a pattern was created"). The content of your data — names, notes, rates, times — is never included in analytics events. Firebase may collect device identifiers, approximate device characteristics (model, OS version, language) and general usage statistics.

3. Diagnostics

The app uses Firebase Crashlytics and Firebase Performance Monitoring to collect crash reports and performance metrics: device model, OS version, stack traces and timings. These reports do not include the content of your schedule. They help the developer find and fix bugs.

4. Notifications

The app uses Firebase Cloud Messaging, which may register an anonymous device token. Shift reminders themselves are scheduled locally on your device and do not involve any server.

5. Data sharing

The developer does not sell, rent or share your data with anyone. The only third party processing the technical data described above is Google (Firebase and Google Play services), under Google's own privacy policies:

Google Privacy Policy: https://policies.google.com/privacy
Firebase: https://firebase.google.com/support/privacy

6. Data retention and deletion

Your schedule data lives only on your device: deleting the app (or clearing its data in system settings) permanently deletes it. Analytics and crash data are retained by Google for limited periods under Firebase policies. To request deletion of diagnostics data associated with your device, contact me at the email below.

7. App permissions

Notifications — to show shift reminders.
Alarms & reminders (exact alarms) — so reminders fire exactly on time.
Vibration — haptic feedback in the interface.
Run at startup — to restore scheduled reminders and widget updates after the device reboots.
Internet — used only by Firebase services described above; the app's features work offline.
Ignore battery optimizations (optional) — you may grant it so reminders are not delayed by aggressive battery savers; the app works without it.

8. Children's privacy

ShiftTracker is a general-audience utility and is not directed at children under 13. The app does not knowingly collect personal information from children.

9. Changes to this policy

If the policy changes (for example, when new features are added), the updated version will be published at this address with a new "Last updated" date.

10. Contact

Questions about this policy or your data: o.marchenko.apps@proton.me

Developer: Oleksandr Marchenko

PRIVACY POLICY

1. Information stored on your device

2. Usage analytics

3. Diagnostics

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4. Notifications

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The app uses Firebase Cloud Messaging, which may register an anonymous device token. Shift reminders themselves are scheduled locally on your device and do not involve any server.

5. Data sharing

​

The developer does not sell, rent or share your data with anyone. The only third party processing the technical data described above is Google (Firebase and Google Play services), under Google's own privacy policies:

Google Privacy Policy: https://policies.google.com/privacy

Firebase: https://firebase.google.com/support/privacy

6. Data retention and deletion

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7. App permissions

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Notifications — to show shift reminders.

Alarms & reminders (exact alarms) — so reminders fire exactly on time.

Vibration — haptic feedback in the interface.

Run at startup — to restore scheduled reminders and widget updates after the device reboots.

Internet — used only by Firebase services described above; the app's features work offline.

Ignore battery optimizations (optional) — you may grant it so reminders are not delayed by aggressive battery savers; the app works without it.

​

8. Children's privacy

​

ShiftTracker is a general-audience utility and is not directed at children under 13. The app does not knowingly collect personal information from children.

​

9. Changes to this policy

​

If the policy changes (for example, when new features are added), the updated version will be published at this address with a new "Last updated" date.

10. Contact