Effective date: July 28, 2026
GangnamTokki Co., Ltd. ("Company") operates the mobile application "Ultra Precision Compass" ("App") and values the privacy of its users, complying with the Personal Information Protection Act and other applicable laws. This policy explains what information the App collects, how it is used, how long it is retained, and whether it is shared with third parties.
The App can be used without account registration or login, and it does not collect personal information that could directly identify a user, such as name, phone number, or email address. However, the following information may be collected to provide the App's core features (compass, GPS, altimeter, AR) and to improve service quality.
| Item Collected | Collection Method | Purpose of Use |
|---|---|---|
| Location information (GPS latitude/longitude, altitude) | Device location sensor (when permission is granted by the user) | Displaying current coordinates on the GPS tab, GPS-based altitude correction on the altimeter tab ※ Location information is processed only on the device and is never sent to or stored on the Company's servers. |
| Camera view (live video) | Device camera (when permission is granted by the user) | Providing the AR (augmented reality) overlay mode on the compass tab ※ The camera feed is shown on screen in real time only and is never stored or transmitted. |
| App usage logs, screen view history, device model/OS version, app version | Firebase Analytics (Google) | Analyzing service usage statistics, improving features |
| App install path, advertising identifier (ADID/IDFA) | AppsFlyer | Measuring marketing performance (install attribution) |
| Advertising identifier (ADID/IDFA), ad impression/click logs | Google AdMob | Serving banner ads and measuring ad performance |
| Device information and error logs (stack traces) at the time an error occurs | Sentry | Diagnosing app errors and improving stability ※ Sensitive information that may appear in error logs (such as location coordinates) is automatically masked before being sent. |
| Device information and crash logs (stack traces) at the time the app crashes | Firebase Crashlytics (Google) | Diagnosing app crashes and improving stability ※ Collected in parallel with Sentry for the same purpose. |
※ The App does not use server-sent push notifications.
The following information is stored only inside the user's device and is never sent to the Company's servers.
Information collected under Section 1 is retained until the purpose of collection is achieved or for the period required by applicable law, after which it is destroyed. The retention periods of each service provider (Firebase, AppsFlyer, AdMob, Sentry) follow that provider's own policy.
The Company does not provide user information to third parties without separate consent. However, the Company outsources certain data processing to the following providers in order to operate the service.
| Provider | Outsourced Task |
|---|---|
| Google LLC (Firebase, AdMob) | Service usage statistics, ad serving and performance measurement |
| AppsFlyer Ltd. | App install and marketing attribution analysis |
| Functional Software, Inc. (Sentry) | App error monitoring |
The App requests location and camera access for the following features. Both permissions are used only for the core features they support (GPS/altimeter, AR compass), and users can revoke them at any time from their device settings. If a permission is not granted, only the corresponding feature (GPS coordinate display, AR mode) is limited — the App's other features (compass dial, level, etc.) continue to work normally.
The App serves banner ads through Google AdMob, and personalized ads may be shown using advertising identifiers (Android Advertising ID / iOS IDFA). Users can opt out of ad personalization at any time from their device settings (Settings > Privacy > Ads).
This App is not directed at children under the age of 14, and the Company does not knowingly collect personal information from children.
Users may contact us at any time using the information below to inquire about how their information is processed, or may revoke App permissions such as location and camera access through their device settings.
This policy may be revised due to changes in law, policy, or the service. Any changes will be announced within the App or on this page.
Company name: GangnamTokki Co., Ltd.
Email: help@gangnamrabbit.com