Last Updated: 2026.04.08

Effective Date: 2026.04.08

Version: V1.0

Welcome to One Circle (the "App", "we", "us", or "our").

These Terms of Service form a binding agreement between you and the developer/operator of the App regarding your download, installation, registration, sign-in, access to, and use of the App and related services. Please read these Terms carefully before using the App.

If you do not agree to any part of these Terms, please do not download, install, register for, sign in to, or use the App. By using the App, you acknowledge that you have read, understood, and agreed to be bound by these Terms.

## 1. Contracting Party

Developer/Operator Name: One Circle

## 2. Services Provided

The App is currently a mobile application centered on circle-drawing, scoring, and related interactive features. The current version mainly provides:

1. Gesture-based circle drawing and real-time scoring;

2. Result display and grade feedback;

3. Saving scores, path data, and history after sign-in;

4. Leaderboard and achievement display;

5. Score image generation, sharing, and saving;

6. Settings, help pages, About page, Terms of Service, Privacy Policy, and related content;

7. Other supporting services related to the above functions.

We may modify, upgrade, limit, suspend, interrupt, or terminate part or all of the services based on business needs, technical updates, legal requirements, or operational arrangements.

## 3. Account and Sign-In