Matemática Básica is an Android app developed by GCFGlobal that offers free courses on basic math, percentages, and fractions. Designed to help users improve their math skills, this app is perfect for anyone who struggles with math concepts related to savings, interests, or credits.

The app's user interface is straightforward and easy to navigate. Upon opening the app, you will find a list of courses available, each with a brief description of what it covers. The courses are broken down into smaller lessons with interactive quizzes to test your understanding. The app also includes helpful videos to supplement the lessons and make learning more engaging.

Overall, Matemática Básica is a great app for anyone looking to improve their math skills. It's user-friendly, interactive, and offers a wide range of courses to choose from. Best of all, it's completely free to use!