Test Ley, developed by Dypot, is a free Android app designed to help you prepare for exams based on the Spanish administrative law. It is specifically designed to simulate tests based on the Law, which deals with the Common Administrative Procedure of Public Administrations.

With Test Ley, you can take random tests on a topic of your choice. The app also has a simulator that allows you to take exams on all the topics of the Law. The questions are regularly updated via the web, and you can even challenge a question if you think it's incorrect.

The app also provides you with statistics of the tests you have taken, including the number of questions answered correctly, incorrectly, or left blank. Additionally, the app simulates the score you would receive on the exam by deducting one point for every three incorrect answers.

Overall, Test Leyis a powerful app that provides you with a comprehensive exam preparation experience. It includes questions from various official exams, reviewed, selected, and updated by the developer. If you're preparing for an exam based on the Spanish administrative law, this app is definitely worth checking out.