Quote Originally Posted by Ares View Post
... I am not able to download the app right now and look what it actually is
You can find a video tutorial for each platform here:
iOS: https://www.youtube.com/watch?v=NNFPbaXqtlI&t=1s
Mac OS X: https://www.youtube.com/watch?v=NyUeoI63My0&t=31s
Android: https://www.youtube.com/watch?v=4USbIQh5Gcw&t=163s

You find a short demonstration on how to quickly input a complete 32-measure song using the editor in iReal Pro. You can slow down the videos in youtube's settings.
iOS: https://youtu.be/jo9yOlBrl9g
Mac: https://youtu.be/hKYZ6brXsvU
Android: https://youtu.be/Fe5qQEwf9_I

You can also search the internet, some of our users have made great tutorial videos.

Hopefully this will help you understand what iReal Pro does. It is the basically the same on each platform.