Tethr — Privacy Policy

This Privacy Policy explains how Tethr ("Tethr," the "app," "we," "us," or "our") handles information when you use Tethr to turn your iPhone camera into a webcam for your computer.

Tethr is developed by Sverre Anker Larsen Grønaas ("we"), based in Norway. If you have any questions about this policy or about how Tethr handles information, you can contact us at [insert your contact email].

Tethr is built with privacy as a starting point. The video from your iPhone is sent directly to your own computer over a USB cable. It is not uploaded to us, stored on our servers, or shared with any third party.

Camera video. To work as a webcam, Tethr captures the video image from your iPhone camera and transfers it to your computer over USB. This video is processed in real time and displayed on your computer. Tethr does not save the video by default, and the video is never sent to us or to any external server.

Camera and image settings. Settings you choose in the app — such as resolution, rotation, brightness, contrast, saturation, sharpness, and zoom — are processed locally to adjust the image. They are stored only on your own device.

Device information for the connection. To establish the USB connection between your iPhone and your computer, Tethr uses device identifiers (such as the device UDID) and system services provided by Apple (Apple Mobile Device Support) on the computer. This is used solely to create the local USB connection between your own devices.

Local diagnostic logs. Tethr may write technical logs locally on your computer (for example, frame rate, latency, resolution, and connection status) to help with troubleshooting. These logs are stored only on your own machine and are not sent to us automatically.

Camera access (iOS). Required so that Tethr can capture the video image that is sent to your computer. Without this permission, the app cannot function.

USB / device connectivity.Tethr connects to your computer over USB using Apple's device connectivity services. You will be asked to approve "Trust This Computer" on your iPhone the first time you connect it to a given computer. This is a standard Apple security step that authorizes the local connection between your own devices.

You can withdraw permissions at any time in your device settings. Note that if you revoke camera access, Tethr will no longer be able to function as a webcam.

The information described above is used solely to:

• transfer camera video from your iPhone to your own computer,
• display and adjust the image according to your settings,
• establish and maintain the local USB connection,
• troubleshoot and improve the app's stability through local logs.

We do not use this information for profiling, advertising, or sale.

We do not share your video, images, or personal information with third parties.

Tethr relies on certain third-party components in order to function:

• Apple — for the iOS platform, app distribution (App Store / TestFlight), and USB connectivity through Apple Mobile Device Support. Apple's handling of information is governed by Apple's own privacy policy.
• Microsoft — on Windows, Tethr uses built-in system components (such as Media Foundation and WebView2) to decode and display video locally on your PC.
• Open-source software — Tethr uses libraries such as libimobiledevice to communicate with your iPhone over USB. These run locally on your own devices.

These components run locally and do not receive your video for storage or external processing. When you download the app through the App Store, Apple may collect information in accordance with Apple's own policies.