The app is partially in Chinese, so it loses a point for that as there’s no English option. The parts of the app that are in English are OK, definitely needs some work done. We had issues synching the cube up. We previously had a faulty rubix cube that connected to phone and the app from that was far superior. It was difficult to solve the cube by using the app. It was a challenge to photograph, we had to enter it manually a lot and some of the time it just said there was an error and reset it! So be aware it’s not as simple and easy as it automatically knowing the colour positions and telling you how to solve it but we did eventually manage to get the app to show how to solve it and we also used it to solve other cubes. Please update the app in English as that would be a huge help. Stars lost 1 due to the app issues and 1 for the cube not connecting and automatically knowing the positions of the colours like the rubix one did. This was the biggest disappointment factor in this cube. The cube itself is nice to use, turns easy and spins well. My son says it’s very nice to use.