Clefs: Music Reading Trainer is an Android app developed by Crazy Ootka Software AB. It is a full version software that falls under the Education & Reference category. The app teaches how to read and write sheet music on the stave, making it an ultimate solution for those who want to learn music reading.

Clefs consists of seven chapters and over 200 music reading and writing lessons. The course is designed in a progressive manner, starting from the simplest and advancing to the most difficult lessons. The app features a powerful custom exercise editor, enabling users to create exercises tailored to their demands and needs.

The app also provides an introductory theory for each chapter, detailed daily statistics, and daily exercises generated specifically for each user. Moreover, Clefs supports using your MIDI-keyboard in sight reading exercises. The app's simple and beautiful design supports light and dark themes.

Clefs comes from the developers of Perfect Ear, the most downloaded music education app in the Play Store. Clefs is the perfect app for those who want to learn how to read sheet music and write music down on the stave.