This app continuously removes previous coins & their gems, I assume so u have to pay, but I have tested many times now, I ck my coins b4 & after doing their daily ck ins, most of the time they just don't ever give u them, but mine have even been removed, I had been saving mine up to add new traits when I first noticed, after your 4th-day ck in a row u should get a bonus. Well, I ended up with less than I started with; this happened multiple times.. waste of time