3 hearts to 4 hearts
I have 3 hearts to lose when I learn lessons and do drills. I've noticed that a friend of mine who recently signed up gets 4 hearts. How can I get 4 hearts on my account?
I agree. I think each lesson gives a different amount of hearts depending on its difficulty.
when you do a test to master a skill you only get one heart and when I practice previous lessons I sometimes get two. I think it depends on how well you are supposed to know the lessons and on their difficulty.