Cube Timer, developed by Mateus Fiereck, is a free Android application that serves as the ultimate tool for speedcubers. The app offers a variety of features that cater to the needs of cubists of all levels. It includes all the modalities championships, such as Rubik's Cube, Megaminx, Pyraminx, and many others, with official scramble generators.

The app allows you to add your own categories and cubes, and even increase the font size of the scrambler. Inspection time with an alert sound is also available, along with several averages and graphs to analyze your evolution. You can sort your times by date and time, add times manually, and even share your times with others. The app also has a last session feature that allows you to review your most recent times. Additionally, you can view screen championships from around the world and export/import all your times.

Overall, Cube Timer is an excellent tool for speedcubers who want to improve their skills and track their progress. It is easy to use, accurate, and provides all the necessary features to help you achieve your goals.