XCalc Privacy Policy

🛡️ Privacy and Local Data Storage

XCalc is an application that prioritizes your privacy. We do not collect, store, or transmit any personal data generated within the app.

Your data always stays on your device.

All user-generated data, including files, notes, images, and any other content, is stored exclusively on your local device. XCalc does not access, copy, or back up this information to our servers or any other third party.

**Data Security and User Responsibility:** Any passwords or security credentials you create within the app are **encrypted and stored only on your device**. Due to this local encryption, no one, including the developers of XCalc, can read or recover your password. **You are solely responsible for the security of your device, your password, and the data stored within the application.**

You have complete control over your data, and deleting the application will result in the removal of all locally stored data.

📸 App Permissions and User Content

XCalc requests access to the following device permissions solely to enable specific features requested by the user. This data is processed **locally** and is **never transmitted** to our servers.

Camera Access: Used to allow you to take photos, record videos, or scan QR codes directly into the app for local storage.
Microphone Access: Used for audio recording and video recording features, allowing you to save recordings locally within the app.
Photo Library Access: Used to select and import existing photos or videos from your device's library into the app for local management and storage.
Face ID/Touch ID (Biometrics): Used solely to verify the user's identity quickly and securely for features like app locking or protected folders. **XCalc does not access or store any biometric data;** the system verifies the identity locally.

We only request these permissions when you actively try to use the corresponding feature (e.g., clicking a 'Take Photo' button).

⚙️ Third-Party Services (AdMob, Firebase & Ad Mediation)

To support the development and maintenance of XCalc, we integrate the following third-party services. These services may collect device data and use it according to their own policies:

Google AdMob: Used for serving advertisements. AdMob may collect information to deliver personalized advertising.
Facebook Audience Network: Used as an ad mediation partner within AdMob to increase ad fill rates and revenue. Facebook may collect data as part of its mediation service.
Google Firebase: Used for analytics and crash reporting purposes so we can improve the stability and performance of the application.

🔒 App Tracking Transparency (ATT) Framework

XCalc respects and complies with Apple's App Tracking Transparency (ATT) guidelines.

If we wish to access your device's Identifier for Advertisers (IDFA) for personalized advertising purposes, we will always request your explicit permission via the ATT prompt.

You are free to choose whether to allow or deny this request, and your decision will not affect the core functionality of the app.