WHY IPHONE ONLY?

The reason Otto’s Tuning System only works with iPhone 5 or 6 is down to the front-facing camera the app uses to ‘see’ the gauge targets. The process relies on consistency and accurate calibration, so it’s essential to use the same hardware, and these iPhones share the same front cameras. Android phones are developed by different companies, and their cameras all vary, as do the iPhone’s more powerful rear cameras. Theoretically it is possible to support every phone camera, but the costs involved are prohibitive, and for now, this situation is unlikely to change.

Using the system requires good lighting – sufficient to comfortably read a book – so allowing the Photogrammetry function to read the targets in much the same way as face-recognition software does in modern cameras.