Terms of Service
1. Service Use and Features
- Users may use this application for various calculations including basic arithmetic, unit conversion, percentage calculation, date calculation, age calculation, discount calculation, currency conversion, screen ratio calculation, and storing calculation history on their local device.
- No account registration or login is required to use the basic features of this app.
- Any actions that disrupt the normal operation of the application or system are strictly prohibited.
2. Advertising and Service Operations
- This app is provided free of charge and utilizes advertising services (such as Google AdMob) to support ongoing operation and maintenance.
3. Data Management and Local Storage
- All calculation records and user preferences are stored strictly on the user's local device storage.
- The developer does not collect or transmit personal calculation records to external servers without explicit user consent.
- Users may clear their calculation history or app settings at any time within the app or by clearing app data in device settings.
4. Limitation of Liability
- While the developer strives to maintain high calculation accuracy, the final responsibility for using calculation results rests with the user. Users are advised to re-verify critical financial, legal, or professional calculations.
- The developer is exempt from liability for service interruptions, errors in specific device environments, or data loss caused by external factors.
5. Revisions and Inquiries
- These terms may be revised to reflect service changes or relevant legal requirements.
- For any inquiries regarding the service, please contact [email protected].
Last Updated: August 20, 2026