What are some alternatives?
When comparing Touch Pianist and Jameasy for Violin, you can also consider the following products
Simply Piano - Fast and fun way to learn piano
Pianu - Learn to play the piano in your browser.
alphaTab - alphaTab is a cross platform music notation and guitar tablature rendering library.
Type Drummer - Drum by typing
Yousician - An interactive guitar-learning app.
lightnote - An interactive site to learn the basics of music theory 🎶