What are some alternatives?
When comparing Melodics and alphaTab, you can also consider the following products
Flowkey - The easiest way to learn piano with your iPhone or iPad
MyMusicTeacher - MyMusicTeacher is an excellent music learning application that allows you to get access to its revolutionary guitar lessons, from beginner to an advanced level.
Yousician - An interactive guitar-learning app.
Guitar Pro 7 - Create, play and share your tabs
Simply Piano - Fast and fun way to learn piano
iReal Pro - iReal Pro – Music Book and Backing Tracks is a commercial music app developed by Technimo for Android and iOS devices.