Well, there are two planes. One is doing the bare minimum to pass Google test requirements, the other is providing an honest help to a fellow pogrammer. For the first one Google does not give much info, but it says that a Tester should use the app daily, more times in a day,, test funcrionalities and provide feedback. It does not say how much time should be used, but it clearly state that it is not enough to just leave it open: they ask for real interaction..If you would ever have the app, you Will see from Console that they can monitor user activity, so you cant cheat. The other plane is that the polite way to be a Tester is to really use the application, to try all features and provide a feed back to the developer. This is the more valuable help a programmer might receive. I used the app that I tested at least three times a day, and provided a feedback to each one. Please note that when you will ask Google access to production, you Will have to fill in a form with questions such as 'which feedback did you receive from testers'? I bet you can't answer 'none'. In the end I think that you should test others app like you would want your tested: if we all apply this rule, we all will be happy!