Percent Privacy Policy

Effective date: May 17, 2026

DevJK provides the Percent app. This policy explains what information Percent processes and which third-party services it uses.

1. Information Processed

Percent does not create user accounts and does not directly request your name, email address, phone number, contacts, photos, precise location permission, health information, payment card information, or financial account information.

The app may process the following information to provide its features.

• Calculator input: amounts, percentages, result values, and calculator entries are processed on your device and are not sent to a developer server.
• Currency selections: the selected base and quote currencies are stored on your device so the app can show the same currency pair the next time you open it.
• Exchange-rate requests: selected currency codes are sent to the Frankfurter API to retrieve exchange-rate information. Based on the current implementation, the amount entered by the user is not sent to the exchange-rate API.
• Advertising and device data: the app uses the Google AdMob advertising SDK. This SDK may collect or share information such as IP address, app interactions, diagnostics, and device or advertising identifiers for advertising, analytics, fraud prevention, and security.

2. Purposes

• Provide percent calculation, reverse calculation, basic calculator, and currency conversion features
• Save the selected currency pair on the device
• Display ads and measure ad performance
• Support app and advertising SDK stability, security, and fraud prevention

3. Third-Party Services

Percent uses Google AdMob for ad serving, ad measurement, analytics, and fraud prevention, and the Frankfurter API for exchange-rate data. According to the Frankfurter API documentation, the public API runs behind Cloudflare, and Cloudflare may collect some basic information for analytics. Google AdMob data processing may vary depending on Google policies and the user's advertising settings.

4. Storage and Retention

Percent does not store user accounts or calculation history on a developer server. Currency selections are stored on the user's device and can be removed by deleting the app or clearing app data. Information processed by advertising SDKs or exchange-rate API providers is retained according to each provider's policies.

5. Sharing

The developer does not sell personal information. However, some information may be transmitted to Google AdMob and the Frankfurter API for ad serving and exchange-rate lookup. In particular, the AdMob SDK may collect or share data for advertising, analytics, fraud prevention, and security.

6. User Choices

• You can reset your advertising ID or change personalized ad settings in your device settings.
• On iOS, if a tracking permission prompt is shown, you can allow or deny tracking.
• Locally stored currency selections can be removed by deleting the app or clearing app data.
• Privacy questions can be sent to devjkyang@gmail.com.

7. Children

Percent is not designed for children. Users below the legal age in their region should use the app only with consent and guidance from a parent or guardian.

8. Security

Exchange-rate and ad requests use encrypted transport such as HTTPS/TLS. However, no method of internet transmission or electronic storage can be guaranteed to be completely secure.

9. Changes

This Privacy Policy may be updated when app features, third-party services, laws, or store policies change. Material changes will be communicated through the app or distribution page.

10. Contact

• Developer: DevJK
• Email: devjkyang@gmail.com