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Privacy Policy

This policy applies to the Akari app and explains how this logic-solving utility handles data on HarmonyOS devices.

App: Akari Last updated: 2026-04-09

1. Information We Collect

Akari does not require account registration and does not actively collect direct personal identifiers such as your name, phone number, email address, contacts, photos, or precise location.

The app stores settings, solving statistics, and unfinished puzzle progress locally on your device by default. After you agree to the Privacy Policy and Terms of Use, the app enables the Umeng analytics SDK by default and may send anonymous usage events, such as page visits, feature taps, and puzzle completion events, to help improve the product. You can turn off "Usage Analytics" at any time in Settings.

Within the app configuration, non-essential fields such as OAID, device model, OS version, PLMN, and automatic page collection are disabled. However, the third-party SDK may still process the minimum device and network environment information necessary to provide analytics functionality. Please refer to the third-party provider's official documentation for details.

2. Information Stored Locally

To provide a continuous solving experience, the app stores the following data locally on your device:

  • UI preferences such as language, theme, light-ray effects, error highlights, and the analytics toggle
  • Solving statistics such as started sessions, solved records, hint usage, and best times
  • Current unfinished puzzle progress so the app can restore your work

This data is stored locally by default and is not automatically synchronized to any developer-owned server.

3. Network Access and Permissions

The app currently uses the following network-related capabilities:

  • Internet access: to open the Privacy Policy and Terms of Use pages and, after your consent, to send anonymous analytics events
  • Network state information: to help the analytics SDK determine connectivity and request context

If you do not want anonymous analytics to be sent, you can turn off "Usage Analytics" in the app settings. When it is off, the analytics SDK will not be initialized.

4. How We Use Data

Local data is used to:

  • Restore puzzle progress and UI preferences
  • Display local statistics and difficulty progress
  • Analyze feature usage trends after you opt in

We do not sell your personal information and do not directly share your local puzzle records or settings with unrelated third parties.

5. Third-Party Services

The current version does not provide accounts, cloud sync, leaderboards, or advertising services. The only third-party service involved is Umeng analytics, which is enabled by default after you agree to the Privacy Policy and Terms of Use and can later be turned off in Settings.

  • Provider: Umeng
  • Service type: App analytics
  • Purpose: Analyze page visits, feature usage, and puzzle completion trends to improve the product
  • Activation condition: Enabled by default after consent and can be turned off in Settings

6. Your Control

You can manage your data in the following ways:

  • Turn off "Usage Analytics" in Settings to stop future anonymous analytics event delivery
  • Uninstall the app to remove locally stored app data from your device
  • Adjust settings to change language, theme, and visual feedback options

7. Children

Akari does not provide account registration or social features and does not intentionally collect personal information from children.

8. Policy Updates

If future versions add accounts, cloud sync, advertising, or other data-processing capabilities that require additional disclosure, this policy will be updated accordingly. Important changes will be announced through app updates or this page.

9. Contact

If you have any questions about this Privacy Policy, please contact:

  • Email: kemp.xu@foxmail.com
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