This is a Rubiks Cube Formula application, not a Rubiks Game or Simulator. This application is designed for beginners, and not for someone who like to speed up their rubiks cube solving time. The method explained in this application is very basic. It uses layer by layer method, and only useful for anyone who never play rubiks cube before.English voice is using smartphones Text to Speech. You can modify the speed of speech through the Language and Input - Text-to-Speech options in your smartphone.If you already tired or almost give up using any other formula found in some other similar apps, just try this apps. Some people are able to solve their rubik only after they use this apps method.Again, this is Rubiks Cube Tutorial apps, not Rubiks Game, but Rubiks Formula apps. You can not play Rubiks Cube using this apps, but you can learn to Solve Rubiks Cube using this apps. You will get a good Tutorial for Rubiks Cube.Please dont hesitate to contact us and drop your feedback, comment, opinion, and input for our improvement.You can access the video tutorial in this youtube link : https://youtu.be/_wN9FcodUZE.