I have found so many apps on the Google Play Store which are just useless. There are so many apps whose names are like "Useless App", "Nothing" and just rubbish, even in their app descriptions, it is written that this app does nothing, and those apps really do nothing. And the irony is that even these apps have hundreds of thousands of downloads.
How does Google test the apps uploaded?
As per my personal experience, Google does not check each and every functionality of the app, it just does some routine validation check for publication. Whereas Apple's App Store does the opposite, Apple requires working login credentials for checking each and every screen at least.
Now, it is perfectly fine to publish an app in Play Store, which does nothing, i.e., useless till the time it is adhering to the Play Store's policy. Now if you found some apps which are violating the listed policy Play Store Policy, you can always report it to Google and most probably Google will unlist that app for sure.
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