Effective date: November 2, 2026
App name: Camera Ruler ("카메라 줄자")
This policy explains what the app processes and where it sends it.
The app has no accounts or sign-in, and the operator runs no server or database that receives your measured values or record names. The app requests one permission only: camera. It does not request location, contacts, photos, SMS, or microphone permissions.
a. Camera video. The app shows the camera view to measure length, and the video is processed only on your device. The app does not store camera video or photos and does not send them to the operator's server or to any third party. Saved records contain no video.
b. Google Play Services for AR (ARCore). The app uses Google's Google Play Services for AR (ARCore) to find surfaces and place points in the camera view. This application runs on Google Play Services for AR (ARCore), which is provided by Google and governed by the Google Privacy Policy. Use of ARCore functionality in the app is subject to the then-current Google Terms of Service (https://policies.google.com/terms) and Google Privacy Policy (https://policies.google.com/privacy). How ARCore handles data: https://support.google.com/ar?p=how-google-play-services-for-ar-handles-your-data. Google may process device identifiers and diagnostics for ARCore usage analytics; the app operator does not receive this. The app does not use ARCore Cloud Anchors or the Geospatial API. On devices that do not support ARCore the app still installs; the measure screen shows a notice and only History and Guide work.
c. Stored on your device (never sent to the operator's server) — record names you chose, measured values (millimetre totals and segments), the "unstable" flag, save time; settings (theme, language, length unit). Stored in on-device storage and removed when you uninstall the app or clear its data. Backup file: when records or settings change, the app automatically writes a backup file (JSON containing the records and settings above) to your device's shared Downloads folder, and "Back up to file" in Settings writes additional files. These files stay on the device and are not sent anywhere by the app, but because they sit in a shared folder they may remain after uninstall unless you delete them, and other apps or file managers with file access on your device can see them.
d. Sharing (only when you tap). Tapping "Share" on a record passes a text of its name, value and segments to the Android share sheet, and only to the app you pick. Nothing is shared unless you tap. No ad plays before sharing; the share sheet opens right away.
e. Monitoring and advertising data sent automatically
Data on your device is deleted when you uninstall the app or clear its data; backup files in Downloads must be deleted by you. Monitoring, analytics, advertising and ARCore data are kept under each system's retention policy and then used only as aggregated statistics.
The app does not provide your measured values, record names, or camera video to anyone. Third parties involved: Google LLC (Google Play Services for AR / ARCore, Firebase, UMP consent — https://policies.google.com/privacy), Unity LevelPlay / Unity Technologies (ad mediation) and OwlMakers (own Pulse monitoring).
This app uses Google's Firebase Cloud Messaging (FCM) to receive announcements and notices sent by the developer. When you open the app, Google assigns an FCM installation ID (registration token) to this installation; the app does not send or store this value on the developer's servers. The app subscribes to notification topics for the app name and your display language, and Google processes that subscription. A notification goes with the same content to every user of the same app and language and carries no personal data. On Android 13+ the notification permission is requested only when you tap the in-app notice line or the settings row, and you can use every other feature without allowing it. You can turn notifications off at any time in the device's Settings → Apps → Notifications, and you stop receiving them when you uninstall the app.
Delete records one by one (undo is available for 5 seconds), use "Delete all records" in Settings, clear app data, or uninstall to remove on-device data; delete backup files in Downloads with a file manager. Revoke camera permission in system settings to stop measuring (History and Guide keep working). Where consent is required, change your ad consent under Settings → Ad privacy settings; elsewhere use Google ad settings on your device.
The app is not directed to children. We do not knowingly collect personal information from children under 13.
If this policy changes, the effective date above is updated; material changes are announced in the app or the store listing.
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