1. General

"Correct Neck" (the "Service") values user privacy and complies with the Personal Information Protection Act and other applicable laws. This policy explains what information the Service collects, how it is used, and how it is retained.

2. Information Collected and Collection Methods

(Stored locally on device) Detailed assessment records (date, score, per-module scores, posture-habit answers), detailed stretching records (date, exercise type, count), and app preferences (language, theme, audio guidance on/off) — these detailed source records are stored only on the user’s device and are never sent to a server.

(Automatically collected, transmitted externally) Usage statistics — via Google Firebase Analytics, the Service separately collects and transmits screen-visit records, the score/per-module scores/day-over-day change at the moment an assessment is completed, stretching completion events (exercise type, routine completion count), activity streak, session duration, and device information (e.g., OS version), for usage-statistics purposes.

In other words, the full source records of your assessments and stretching activity are stored only on your device, but summary values derived from that activity (score, completion status, etc.) are separately sent to Firebase as usage statistics to help improve the Service.

(Advertising, transmitted externally) The Service displays banner ads through Google AdMob. In this process, the advertising ID, device information (device model, OS version, etc.), IP address, and ad impression and click information may be collected by Google. You can reset or delete the advertising ID in your device settings.

(Payments) Payment for the “Remove Ads” item is processed by Google Play, and the Operator does not collect or store payment method information such as card numbers. To decide whether to display ads, the Service only checks with Google Play whether the item has been purchased, and this value is stored only on the device.

3. Purposes of Collection and Use

Providing the Service: storing assessment/stretching records and generating reports.

Improving the Service: analyzing usage (active users, feature usage rates, time spent, etc.) to improve service quality.

Advertising: displaying banner ads and measuring ad performance

Purchase verification: checking whether the “Remove Ads” item has been purchased and controlling ad display

4. Retention Period

Locally stored assessment and stretching records are retained for up to 30 days, after which the oldest records are automatically deleted. Uninstalling the app immediately deletes all data stored on the device.

Statistical data collected via Firebase Analytics is managed according to Google’s data retention policy and is used only in aggregate, non-identifying statistical form.

5. Third-Party Disclosure and International Transfer

The Operator does not, in principle, disclose user personal information to third parties. However, the following external services are integrated to operate the Service, and some information may be transmitted to these providers:

Google Firebase Analytics (Google LLC, USA) — for collecting service usage statistics; usage data may be transferred to servers outside Korea.

Google AdMob (Google LLC, USA) — the advertising ID and device information may be transferred to servers overseas for the purpose of serving ads.

Google Play billing (Google LLC, USA) — payment for the paid item and management of purchase records are handled by Google.

6. Outsourcing of Personal Information Processing

The Service does not use any separate personal-information processing subcontractor. See Section 5 above regarding integration with external services such as Firebase Analytics.

7. User Rights

Users may delete all personal information stored on their device by uninstalling the app.

Inquiries regarding Firebase Analytics data collection may be directed to the contact information below.

You can limit personalized ads by deleting or resetting the advertising ID under Settings > Google > Ads on your device.

8. Children’s Privacy

This Service is not directed at children under the age of 14, and the Operator does not knowingly collect personal information from children under 14.

9. Security Measures

The Service does not operate a member-registration system or a server-based personal-information database. Assessment and stretching records are stored only on the user’s device, minimizing the risk of external data leakage.

10. Data Protection Officer / Contact

Data Protection Officer: Individual developer / Email: kangms1034@gmail.com

11. Notification Obligation

This policy may be amended due to changes in law or service policy, and any amendment will be announced within the app.

Addendum

This policy takes effect on October 7, 2026.