YahHeard

Privacy Policy

DuelSync

DuelSync plays offline. Matches travel phone-to-phone over Nearby connections; camera and microphone challenges are processed on-device and nothing is uploaded.

Development status: DuelSync is still in development and is not yet available on Google Play. This page describes, from the current source code, how the app is being designed to behave. It will be finalised as the formal privacy policy before any release, and updated if behaviour changes.

Information the App Accesses

  • Camera frames during face-analysis challenges (on-device ML Kit)
  • Microphone audio during sound challenges (on-device analysis)

Information Stored on Your Device

  • Local profiles, match history and challenge progress

Information Transmitted Off the Device

  • Match protocol messages sent directly to the opposing phone during a two-phone game (point-to-point, no internet)

Sharing and Third-Party Services

No data is shared with third parties. The app contains no advertising or tracking SDKs.

Permissions

Every permission DuelSync requests, and the reason it exists:

Bluetooth and Nearby devices

Links two phones directly for head-to-head matches. No internet involved.

Location

Required by Android for Bluetooth scanning on older versions. DuelSync does not track where you are.

Camera

Powers face-analysis party challenges. Processing is on-device via ML Kit.

Microphone

Powers sound-based challenges. Audio is analysed on the device.

Vibration

Haptic feedback during duels.

Further Detail

  • Match data travels directly between the two phones over a point-to-point Nearby connection.
  • Face analysis uses on-device ML Kit; images are not stored or uploaded.
  • Profiles, match history and challenge progress are stored locally.
  • No account is required and there is no server.

Data Retention

Profiles and history stay on the device until you delete them.

Data Deletion

Delete profiles in the app, or clear the app's storage in Android settings to remove everything.

Children and Age Considerations

DuelSync is a general-audience app. It collects no personal information from anyone, including children.

External Links

The app does not open external websites.

Changes to This Policy

If the app's behaviour changes, this page changes with it and the date at the top is updated. Material changes for a released app will also be reflected in its Google Play listing.

Privacy Enquiries

Questions about this policy can be raised via the contact page or the DuelSync support page. The website privacy page covers this website itself — the app and the site are separate software with separate behaviour.

Publisher: YahHeard · yahheard.co.uk · Package: com.duelsync

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