Trigonometría Preuniversitario is a free Android app developed by ALVE that falls under the Education & Reference category. The app aims to provide a comprehensive explanation of trigonometry, along with solved problems. It is a great tool for pre-university students who are looking to understand the subject better.

The app's interface is straightforward and easy to navigate. It offers a range of topics, including trigonometric functions, trigonometric identities, and inverse trigonometric functions. Each topic is explained in detail, with examples and illustrations to help students better understand the concepts. Additionally, the app includes a large number of solved problems that cover a wide range of difficulty levels.