Most surveys are relatively short, and you can earn up to $1 in Google Play credits for each survey (though most pay between 10 and 20 cents). Google Opinion Rewards notifies you when a relevant survey is available, too. Once you answer the sign-up questions, Google Opinion Rewards sends you surveys about once a week - although the frequency sometimes changes. Upon signing up, it asks you for some basic information about yourself. Google Opinion Rewards’ only earning method is surveys - which means you won’t find a cash-back shopping portal, videos or games on this app. It lets market researchers create online surveys they can use to gain information about customers. Google created Google Opinion Rewards as an in-house market research tool. Minimum cash-out: None for Google Play credit, $2 for PayPal cash. Google Opinion Rewards Google Play Store Rating