StrokeLab-privacy

StrokeLab Privacy Policy

Effective date: 2026-04-16

StrokeLab is an offline-first Android app for learning simplified Chinese stroke order and handwriting practice.

Summary

• StrokeLab does not require an account.
• StrokeLab shows no ads.
• StrokeLab does not use analytics or tracking SDKs.
• StrokeLab does not collect or transmit personal data to a server.
• All learning data stays on your device.

What we do NOT collect

We do not collect personal information. StrokeLab does not collect, sell, or share personal data (such as name, email, phone number, contacts, precise location, photos, or identifiers).

We do not collect online identifiers. We do not collect Advertising ID, device IDs for tracking, or any cross-app identifiers.

We do not use any third-party advertising or analytics services.

Data stored on your device

StrokeLab stores data locally on your device to provide core functionality:

• A local dictionary database (stroke order data).
• Optional local preferences (for example, UI language and theme choices).
• Optional practice-related data you draw on screen during a session.
• Optional favorites and search history you choose to save.

This data stays on your device. It may be included in device backups you control (for example, Android Auto Backup or manual backups). Uninstalling the app removes all StrokeLab data from your device.

Data backup and restore

StrokeLab has android:allowBackup="true" enabled. This means StrokeLab app data may be included when your device backs up to your Google Account (if Android Auto Backup is enabled). To exclude StrokeLab from backups, you can disable Auto Backup for the app in your device settings, or exclude StrokeLab from your manual backups.

How to delete your data

StrokeLab stores all data locally on your device. To delete your data:

• Uninstall the app — this removes all StrokeLab data from your device.
• To clear specific data within the app, use the “Clear history” option in the app (if available) or uninstall and reinstall.

Third-party services

StrokeLab does not integrate third-party advertising, analytics, or tracking services.

Email feedback

If you choose to contact us via email (for example, by tapping “Send feedback” in the app), the message is sent by your email app and email provider. StrokeLab does not run its own server to receive or process your data automatically; however, the content you choose to send (and any information your email provider attaches) will be handled according to your email provider’s policies.

Permissions

StrokeLab does not request or use the following sensitive permissions for core functionality:

• No camera access — we do not use the camera.
• No location access — we do not request location.
• No microphone access — we do not use the microphone.
• No contacts or calendar access — we do not access your contacts or calendar.

StrokeLab does not require storage permissions for core usage. If we add optional export/sharing features in a future version, we will update this privacy policy and the app accordingly.

Children’s privacy

StrokeLab is a learning tool designed for learners of all ages. We do not knowingly collect personal information from children under the age of 13 (or the equivalent minimum age in your jurisdiction). If you believe a child has provided us with personal data, please contact us and we will promptly delete it.

Google Play Data Safety

This privacy policy aligns with the information declared in the Google Play Data Safety form for StrokeLab. In summary:

• StrokeLab does not collect any user data.
• StrokeLab does not share any data with third parties.
• StrokeLab does not use data for advertising or personalization purposes.
• StrokeLab does not collect data from children in a manner inconsistent with applicable law.

Changes to this policy

If we change how StrokeLab handles data, we will update this policy and revise the effective date above. Significant changes will be communicated via an in-app notice or an updated version of this policy on the StrokeLab website.

Contact

If you have questions about this privacy policy or StrokeLab’s data practices, please contact:

• Privacy enquiries: gjianjun666@gmail.com