Select at least two measures to loop, so you can drill a tricky section over and over.

 

On iPhone, iPad, and Android, press and hold a measure, then drag to extend the selection, or drag the handles at either end. On Mac and Windows, click and drag across the measures. Then tap or click the selection, or press the spacebar, to play the loop.

 

For more, see Play a song on the iReal Pro website.