A free program for Android, by APE Team.

This app contains a complete guide that teaches you how to solve the Rubiks cube using the Fridrich CFOP method. It is the most popular method to solve the Rubiks cube and is the most used in competitions and practice. It is the most used method to learn to solve the Rubiks cube because it contains a lot of information that you can use to learn the most used algorithms in the Fridrich method. 

The guide is made step by step, which means that it is not only a description of the algorithm but also an explanation of how to do it. You will not only learn to solve the Rubiks cube but also will learn how to make an initial guess and calculate the probability of finding the solution. 

It is also useful for beginners because it contains a complete explanation of the steps to solve the Rubiks cube and also a description of the algorithm.