NoUICamera

This app displays live video from the device’s camera without showing any on-screen UI. It does not provide photo or video recording features. The app is designed solely to output a clean camera feed. By combining it with a video switcher or capture device, an iOS device can be used in a similar way to a web camera. You can switch between the front and rear cameras using left or right swipe gestures. You can also zoom in on the video feed using a pinch-out gesture.