The Option to Compare with Other Users

Give members the option to post their practice hours to compare to others. The point would be to motivate you to practice more. Plus the ability to share their notes on the days they do practice.

Can you elaborate a bit? For example, would like to compare to people you know (e.g. invite them to share their stats). Or would you like public leaderboards (e.g. compare to people with the same instrument in your city, optional opt-in)... what exactly would you like to see? Just hours practiced comparison?