I just downloaded this a few days ago. I transferred $150 and used the coins to play games to earn $0.70. The amount of coins they give you to play games with is pretty trivial so now that I'm out of coins I have nothing to do within the app for awhile but it was fun while it lasted! You also earn a tiny amount of interest. Maybe once I feel more confident/comfortable with Long Game I'll transfer a larger amount but right now I'm still figuring it out.