Privacy Policy

Last updated: August 26, 2026

This Privacy Policy describes how 兒童成長記錄 ("the App", "We", "Us", or "Our") collects, uses, and protects your information. By using the App, you agree to the practices described in this policy.

Information We Collect

Data You Provide

The App allows parents and guardians to record and track children's growth data. The following information is stored locally on your device:

• Child's nickname

• Child's date of birth

• Child's gender

• Height measurements and timestamps

• Weight measurements and timestamps

• Body temperature measurements and timestamps

• Remarks associated with measurements

Google Account Information

If you enable the cloud backup feature, the App uses Google Sign-In to authenticate your identity. We access:

• Your Google account name and email (for display and authentication only)

• Your Google Drive storage (to store and retrieve backup files)

We do not store your Google credentials. Authentication is handled entirely by Google's services.

Information We Do NOT Collect

• We do not collect analytics or usage data

• We do not collect device identifiers

• We do not collect location data

• We do not use advertising SDKs

• We do not have our own servers that receive your data

How We Use Your Information

Your data is used solely to:

• Display growth charts and health records within the App

• Back up and restore your data via your own Google Drive (when enabled by you)

• Process in-app purchases through Google Play Billing (Support Developer feature)

Data Storage and Security

Local Storage

All growth data is stored locally on your device using an encrypted database. The data never leaves your device unless you explicitly enable cloud backup.

Cloud Backup (Optional)

When you enable cloud backup, your data is stored in your personal Google Drive account. We do not have access to your Google Drive. The backup file is stored in your own Drive storage and only accessible by you.

Data Deletion

You can delete any child's data or individual records at any time within the App. If you uninstall the App, all locally stored data is permanently deleted. Cloud backup files in your Google Drive can be manually deleted by you at any time.

Third-Party Services

The App uses the following third-party services:

• Google Sign-In — Authentication for cloud backup (Google Privacy Policy)

• Google Drive API — Store and retrieve backup data (Google Privacy Policy)

• Google Play Billing — Process in-app purchases / tip jar (Google Privacy Policy)

• Google Play In-App Review — Allow users to rate the App (Google Privacy Policy)

We do not share your personal data with any other third parties.

Children's Privacy

This App is designed for parents and guardians to record their children's growth data. Important points:

• The App is operated by parents/guardians, not by children directly

• All children's data is provided and managed by the parent/guardian

• We do not directly collect information from children

• We do not require children to use the App or provide any personal information

• Parents/guardians have full control over all data and can delete it at any time

If you believe a child has independently provided personal data through the App without parental consent, please contact us so we can take appropriate action.

In-App Purchases

The App offers optional in-app purchases ("Support Developer" / tip jar). These transactions are processed entirely by Google Play Billing. We do not collect or store any payment information such as credit card numbers or billing addresses.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be reflected by updating the "Last updated" date at the top of this page. We encourage you to review this Privacy Policy periodically.

Contact Us

If you have any questions about this Privacy Policy or wish to request deletion of your data, you can contact us:

• Email: pto720301@gmail.com

Summary

• Do we collect personal data? — Only what you enter (child's nickname, birthday, measurements)

• Where is data stored? — Locally on your device; optionally in your own Google Drive

• Do we have servers? — No

• Do we share data with third parties? — No

• Can you delete your data? — Yes, at any time within the App

• Is the App targeted at children? — No, it is for parents/guardians to use