My biggest survey app payout was $15 from the BigToken app, which has since stopped paying me out anything at all. I got that $15 payout 3 different times and then there were just never surveys in the app anymore after that. I don't understand why it just quit having surveys. I have opened many tickets to ask them why and I just find out anything. If I go back to the app today and there are no surveys I will be deleting it from my phone. The 2nd largest is $10 and I got that from Mistplay and Mode (formerly Current) apps, those I am keeping because there are always surveys on them, and they also have games, offer walls, and other things that you can earn money with besides just surveys.