There are many tricks to install paid apps for free, but many are not legal. Google has its own app, called Google opinion rewards. The app is simple, but takes time.
Google asks some questions like quiz according to your usage. Its a form of survey. It collects your answers and gives you some virtual money which is only usable for some in-app purchases and to buy some apps, games and movies in Google play store.
According to leaks, Android 11 and further android updates are going to be strict in terms of privacy. So, you cannot download and install mod apk’s and other apps which can be threat to your privacy. So, if you want to use some paid apps but still dont want to pay money. You can use Google’s opinion rewards, which is completely legal.
You can also buy some in-app purchases in some apps like pubg, or some games or apps you are using. The only disadvantage of this app is, they wont ask you questions regularly, and you need very long time to earn some decent amount of money. You can download the app from the link below.
Link: https://play.google.com/store/apps/details?id=com.google.android.apps.paidtasks
Techstuff 
Leave a comment