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Privacy & Data Protection Last updated: October 12, 2026

Privacy Policy

Last updated: October 12, 2026. This Privacy Policy matches the in-app Privacy Policy of Stacklear.

1. Who we are

This Privacy Policy explains how Adrian Han ("we", "us", "our") handles information in the mobile game Stacklear (the "App", Bundle ID: com.han.stacklear) on Google Play and the App Store.

Support: 286116014@qq.com

2. Summary

  • Game progress is stored only on your device.
  • We do not create accounts or sync progress across devices.
  • Version 1 does not show ads, sell in-app items, or offer subscriptions.
  • Version 1 does not include third-party advertising or analytics SDKs, and does not send gameplay data to us over the network for analytics.

3. Information we store on your device

The App may store the following locally on your device (for example in app storage or preference files):

  • Level progress, stars, and coins — to continue your game
  • Settings (including Reduce Motion) — to remember your preferences
  • Optional local diagnostic logs (if enabled) — to help fix bugs; not sent to third parties in version 1

We do not collect your name, email, phone number, or payment details through the App in version 1, because there is no account system and no in-app payments.

4. Information we do not collect in version 1

In the current version of the App we do not:

  • Use advertising identifiers for ads
  • Integrate third-party ad networks
  • Integrate third-party analytics or crash-reporting SDKs that upload data
  • Process in-app purchases or subscriptions
  • Require login or social sign-in
  • Sync game data to our servers or across devices

If a future version adds ads, analytics, accounts, or purchases, we will update this Policy and, where required, ask for consent before those features apply.

5. Permissions

The App only requests permissions needed to run as a local puzzle game. If a platform requires a specific permission, we use it only for that stated purpose. We will list any new permissions in store listings and in an updated Policy.

6. Children

The App is a casual puzzle game intended for a broad audience. The official age rating is set by Google Play and the App Store. We do not knowingly collect personal information from children. Version 1 keeps progress on-device only.

7. Data retention and deletion

Local data stays on your device until you clear the App's data or uninstall the App. Uninstalling removes locally stored progress and settings for that install. Because we do not hold a cloud copy in version 1, we cannot restore progress after uninstall.

8. Security

We design the App so that version 1 gameplay data stays on your device. No method of storage is completely secure; protect your device with a lock screen and keep the operating system updated.

9. Your choices

  • Turn Reduce Motion on or off in Settings.
  • Clear App data or uninstall to remove local progress.
  • Contact 286116014@qq.com with privacy questions.

10. International users

The App may be offered in multiple countries. Version 1 does not transfer gameplay analytics to our servers. If that changes, this Policy will explain where data is processed and the safeguards we use.

11. Changes

We may update this Policy. The "Last updated" date will change, and we will post the new version at the same place (in the App and, when available, on a public webpage linked from the store listing). Continued use after an update means you accept the revised Policy, except where law requires additional consent.