Well, it totally depends on your skills and demands. The Skoove application is designed to help people with different skill sets. It is designed with an easy interface and advanced techniques that allow you to practice your skill ideally and absorb the nuanced concepts of music. In contrast, Simply Piano is designed primarily for beginners, with a better progress monitoring system and basic lessons that can help you excel better in this field. So, you can choose the one that suits you well.