Rewards are intermittent and infrequent
Ive become less impressed with this system as Ive used the app more. After some initial perks, I find more and more weaselling seems to go on to avoid granting payment for participation. While it is reasonable to have some top-level screening, perhaps based on demographic categories, more frequently than not I found myself spending 5-10 minutes answering detailed surveys the app already selected me "in" for, only to find I am at some arbitrary point screened "out" with no payment. I feel that if you meet the criteria to enter one of the surveys, it is pretty unethical to be put through multiple questions that the surveyor no doubt still gathers the data for, then to be kicked out.
It is also rather buggy. Some of the surveys format poorly within the app, it is difficult or impossible to complete some, and inevitably if the user tries to back up or restart or fix something, the interface again kicks you out or even totally crashes, with credit not being applied.
johannab about
QuickThoughts - Earn Rewards, v2.8.2