Is mistplay worth it after redeeming $20 worth of points?

So I used an old phone to download mistplay and let it run all day with the occasional charge and making sure it didnt overheat. I got 6 different apps to level 11 which took me about a month to do but got me about 5k points. I redeemed it and wondered if I should continue using this app or use another similar app. So uh what do I do?