Coins are an in-app currency that you earn through hitting savings goals and missions, playing the Daily Game, and more! You can use Coins to play games and enter the weekly drawing. You can also win coins from game play.
You earn Coins daily based on how much you are saving with Long Game: as your Savings Jar balances increase, so does your daily coin rate, allowing you to play more games and win even more! Coins are also earned every time you use RoundUp for purchases on your Long Game debit card.
Additionally, you can earn Coins by accomplishing savings Missions. You can see full earning rules here.