Guitar Sight Reading Trainer by Rolf Steenge is an iOS app designed to help guitarists develop their sight reading skills. With practice and test modes, the app offers four different ways to locate notes on the fretboard, making it easier for users to find notes based on pitch, name, or staff. The app is perfect for musicians looking to improve their sight reading skills for any genre of music.

The app also supports key signatures and scales, offering a choice of enharmonic notes for each scale to avoid double sharps or double flats in the key signature. The app includes major, minor, melodic minor, harmonic minor, blues, pentatonic, and all modal scales. Users can also group frets to restrict the number of notes to be practiced and tested, and any custom fret group can be defined.

The app allows users to read ahead by varying the number of read ahead notes and offers more than 15 alternate guitar tunings, including drop D, NST, and all fourths tuning. The app also supports left-handed guitar and has an option to show the fretboard in perspective (in landscape mode). With no ads or in-app purchases, the app is perfect for guitarists looking to improve their sight reading skills without any distractions.