Privacy Policy

CloudEx Inc. ("we", "us", or "our") operates the "Period Tracker Pro" app (the "Service"). This Privacy Policy explains what information we collect, how we use it, and the choices available to you. Because the Service is used to record information about your menstrual cycle and your health, this Policy explains in particular how that information is handled. By using the Service, you are deemed to have agreed to the practices described in this Policy.

1. Our Core Principle

Period Tracker Pro is a period tracker. You log your periods and how you feel each day, and the app estimates your next period, your ovulation day, and your fertile days. Everything you log is stored only on your device, and all predictions, charts, and summaries are calculated on your device. There is no account and no sign-up, and nothing you log is ever sent to us or to anyone else. Specifically, we do not have access to any of the following:

  • Your period dates, cycle lengths, and predictions (next period, ovulation day, and fertile days)
  • Your daily logs: flow and spotting, body symptoms, moods, discharge, sexual activity (including whether it was protected), basal body temperature, weight, ovulation and pregnancy test results, pills taken or missed, the logging items you add yourself, and notes
  • Your cycle notes, your pregnancy mode information, and your pill tracker settings
  • The backup files, CSV files, and reports you create

Your records leave your device only through actions you take yourself — exporting or sharing them, or adding a date to your calendar — or through your own Android device backup (Section 3).

2. Our Commitments About Your Health Data

In this Policy, "health data" means everything you log in the app and the predictions calculated from it.

  • We never sell your health data.
  • We never share your health data with advertisers or data brokers.
  • We never use your health data for advertising.
  • Your health data never leaves your device, except where you export or share it yourself, or where it is included in your own Android device backup.
  • Your health data is never included in crash reports or in any other information the app sends over the internet.

3. Where Your Records Are Kept

  • On your device: Everything you log — your daily records, the logging items you add, and your cycle notes — is stored in the app's database on your device. Your settings (such as cycle settings, reminders, the pill tracker, pregnancy mode, and the app lock) are stored in the app's storage on your device.
  • Android backup and device transfer: If backup is turned on in your device settings, Android may include the app's records and settings (including your Premium purchase state) in the backup it saves to your own Google account, and may copy them to a new phone when you transfer your data directly. Information that belongs to a single device — how far reminders have been shown, the permission for the automatic backup folder, review prompt records, and whether you have seen the introduction screens — is excluded. This is handled by Android; we have no access to it.
  • Files and text you create yourself: Your records leave the app only when you choose to do one of the following. We never receive any of these files or this text.
    • Back up / Restore from a backup — Saves all your records, together with your cycle, pregnancy mode, and pill tracker settings, to a file in the location you choose with the system file picker (for example, your device or Google Drive), and reads a backup file you choose. Before restoring, the app keeps a copy of what was in the app in its own storage (up to the three most recent) so that you can undo the restore.
    • Automatic backup — When you turn it on, a copy is saved once a day to the folder you choose, keeping the last 7 days. If that folder belongs to a cloud storage app, the copy is uploaded by that app and that provider's terms apply.
    • CSV export and import — Writes your daily records to a CSV file in the location you choose, or reads a CSV file you choose.
    • Report for your doctor (PDF, Premium) — The PDF is created on your device and goes only where you save or share it.
    • Share upcoming dates — Sends your next period and fertile days as text to the app or person you choose.
    • Add to calendar — Passes your expected next period to the calendar app you choose. What happens to it after that is governed by that calendar app.
  • Deleting your records: "Delete all records" (Settings → Backup) deletes your periods, daily logs, the logging items you added, and your cycle notes from the app; your settings and your Premium purchase are kept. The copies kept before a restore are not removed by "Delete all records". Uninstalling the app or clearing its data deletes everything stored in the app, including your settings and those copies. Files you have exported (backup files, automatic backup copies, CSV files, and PDF reports) remain where you saved them until you delete them.

4. App Lock, Notifications, and Widgets

  • App lock: If you turn on "Lock the app", the app asks for your fingerprint, face, or screen lock (PIN, pattern, or password) when it opens. The check is performed by Android; the app never receives your biometric data. You can also turn on "Hide contents in recent apps", which also blocks screenshots of the app.
  • Notifications: All reminders are optional: before your period, on the expected day, when your period is late, when your fertile days begin, on your estimated ovulation day, a daily logging reminder, a temperature reminder, pill reminders (Premium), and a PMS forecast alert (Premium). Reminders are scheduled and created on your device.
  • Hide what notifications are about: When this is on, notifications, the home-screen widgets, and the Quick Settings tile do not mention periods. On the lock screen, the contents of the app's notifications are always hidden.
  • Widgets and tile: The home-screen widgets and the Quick Settings tile show information such as your next period on your device's screen, so anyone who can see your screen may see it.

5. Information We Collect

The app connects to the internet only for the purposes below. None of these connections include anything you log.

5.1 Information Collected Automatically

  • Crash reports: Via Firebase Crashlytics. When the app crashes, we collect the stack trace, device model, Android version, and app version. Crash reports never include anything you log (periods, symptoms, or any other health information), and they do not include personal details such as your name or email address.
  • Purchase information: We use purchase tokens issued by Google Play to verify your one-time "Premium" purchase. We never receive any payment information such as credit card numbers.
  • In-app reviews and in-app updates: Google Play's In-App Review and In-App Updates let you rate the app and install updates without leaving it. Both are handled by Google Play.
  • List of our other apps: To show our other apps, the app downloads their names, descriptions, and icons from our content server (static files hosted on Cloudflare Pages). The request contains no personal data from the app. As with any request to a web server, the server receives your device's IP address as part of the connection. Tapping an app in the list opens its page on Google Play.
  • This privacy policy: The privacy policy screen in the app loads this page from periodtrackerpro.cloud-ex.biz. As with any web request, our web server receives your device's IP address. If you are offline, a copy bundled with the app is shown instead.

5.2 Information We Explicitly Do Not Collect

  • Anything you log in the app, or the predictions calculated from it
  • Your name, email address, phone number, or contacts (the app has no account or sign-up)
  • Your location
  • Anything from the camera or microphone (the app does not use them)
  • Your device's advertising ID (AAID)
  • Analytics about how you use the app (the app does not use Firebase Analytics or any other analytics service)

5.3 Permissions the App Requests and Their Purposes

Period Tracker Pro uses the following permissions only for the stated purposes:

  • Notifications (POST_NOTIFICATIONS, Android 13+) — Shows the reminders you turn on. If you do not allow it, reminders do not appear; everything else in the app still works.
  • Run at startup (RECEIVE_BOOT_COMPLETED) — Sets your reminders again after your phone restarts.
  • Internet and network state (INTERNET / ACCESS_NETWORK_STATE) — Used only for crash reports, Google Play purchase verification, in-app reviews and in-app updates, downloading the list of our other apps, and showing this privacy policy in the app. Logging, predictions, the calendar, and reminders work without an internet connection.
  • Biometrics (USE_BIOMETRIC / USE_FINGERPRINT) — Used only for the app lock, and only when you turn it on. Android performs the check; the app never receives your fingerprint or face data.
  • Google Play billing (com.android.vending.BILLING) — Used to purchase Premium through Google Play.

The app does not request exact alarm, location, camera, microphone, contacts, or storage permissions. Files you back up, export, or import go through the system file picker, so the app can access only the files and folders you choose.

6. How We Use Information

The limited information we collect is used only for the following purposes:

  • Operating and maintaining the Service
  • Verifying your Premium purchase
  • Diagnosing and fixing crashes
  • Responding to support inquiries
  • Complying with applicable laws

7. Third-Party Services

Period Tracker Pro uses the following third-party services. Each service has its own privacy policy.

  • Firebase Crashlytics (Google LLC) — crash diagnostic data, which never includes anything you log
  • Google Play Billing (Google LLC) — the one-time Premium purchase; payment is completed on Google Play, and we receive only a purchase token
  • Google Play In-App Review and In-App Updates (Google LLC) — let you rate the app and install updates without leaving it; handled by Google Play
  • Cloudflare Pages (Cloudflare, Inc.) — hosts the static list of our other apps

Period Tracker Pro contains no advertising SDK, does not use the advertising ID, and does not share any data with advertising networks.

8. Predictions Are Estimates (Medical Disclaimer)

The next period, ovulation day, fertile days, and symptom forecasts shown by Period Tracker Pro are estimates calculated from your records and the settings you enter, and they can differ from what actually happens. Do not use the app for birth control (contraception), to make decisions about pregnancy, or to diagnose any condition. Period Tracker Pro is not a medical device and does not diagnose, treat, cure, or prevent any disease or condition. If anything about your health concerns you, please consult a doctor or another healthcare professional.

9. Data Retention

  • Crash reports: retained for 90 days, then deleted.
  • Your records and settings on your device: kept until you delete them, uninstall the app, or clear the app's data. We do not hold a copy.
  • Automatic backup: the app keeps the copies from the last 7 days in the folder you choose and deletes the older copies it made there. Files you export yourself are kept until you delete them.

10. International Data Transfers

We are based in Japan. The infrastructure used for crash diagnostics, purchase verification, hosting the list of our other apps, and hosting this page may be located in various countries. When you use the Service, the minimal information described above — which never includes anything you log — may be processed outside your country of residence under standard contractual safeguards.

11. Your Rights

Depending on where you reside (e.g., the EEA, UK, California, Japan), you may have the right to request access to, correction of, or deletion of the limited information we hold, such as crash reports and support emails. Because your records are stored only on your device, we cannot see, export, or delete them for you — they stay under your control. You can:

  • Edit or delete records in the app at any time, delete all records with "Delete all records", or uninstall the app or clear its data to erase everything stored in the app
  • Export your records at any time as a backup file or a CSV file
  • Turn reminders on or off, turn on "Hide what notifications are about", or withdraw the notification permission in your device settings at any time
  • Turn off backup in your device settings if you do not want Android to back up the app's data
  • Contact us at the address below to make a request regarding the information we hold

12. Children's Privacy

Period Tracker Pro is not directed to children under the age of 13 (or the minimum age applicable in your region). If we inadvertently collect information from such a child, we will delete it promptly upon being contacted.

13. Changes to This Policy

This Privacy Policy may be updated from time to time. The latest version is always published at this URL together with its effective date. We will also notify you within the app of significant changes as appropriate.

14. Contact

For questions about privacy, data requests, or to report concerns, please email us at .

CloudEx Inc. (Japan)

Effective Date: October 8, 2026