Music Tutor Plus by JSplash Apps is a full-version multimedia application available on the iPhone that helps you develop your sight-reading skills. With Music Tutor Plus, you can learn to read sheet music and improve your speed and accuracy in identifying music notes. You can choose to practice with notes in treble, bass, and alto clefs in timed or untimed sessions.

One of the unique features of Music Tutor Plus is the ability to set your own range of notes that you want to practice with. It also supports notes up to 4 ledger lines above or below the staff on any of the clefs. In addition, the app includes notes reference charts for treble, bass, and alto clefs. You can even connect your keyboard or digital piano using Lightning to USB Camera Adapter and respond directly from your instrument with MIDI support. The app also offers a companion Apple Watch app that allows you to practice recognizing music notes on the go.

Overall, Music Tutor Plus is a great tool for anyone looking to improve their sight-reading skills and learn to read sheet music. With its customizable practice range, MIDI support, and Apple Watch companion app, it's a valuable addition to any musician's toolkit.