Hello The images captured by the camera are used in the item measurement screen. The image is used to align the shape border around the window or door and enter the dimensions The images selected from the library are used in the item measurement screen. The image is used to align the shape border around the window or door and enter the dimensions The app uses the accelerometer to display a spirit level to assist taking level photos The app uses the microphone to record audio notes in the item details screen The app uses speech recognition to receive voice input on the project details and item details screens