earlier online reviewers, especially of money making websites were compensated well since online advertising rates were good.
In the last decade, the online advertising rates have reduced to a very great extent, especially for smaller websites.
Additionally the indian internet companies allegedly led by google are running a massive online writing slavery racket to reward well connected cheater housewives and other frauds
So now those who try the various apps/writing sites do not share information online, anyone interested in making some money online has to waste their time testing the site.