Answering opinions surveys has become a method to make our time profitable. Google Opinion Rewards makes use of this formula to offer us an Android application with that same purpose.
Fill in surveys for credits of Google Play
Designed by the Google Consumer Surveys service, after answering a small questionnaire about ourselves, this app offers us a weekly survey that will reward us with 0,75€ on Google Play after answering it.
The questions are about different aspects of Google Play, as well as our lifestyle or our short and mid-term plans. Don't be fooled, the real objective is to learn about our habits to be able to offer us adverts and services in the future that we might find interesting.
Spend some of your time on your tablet or smartphone and you'll be able to download commercial apps for free.
The truth is that it doesn't make any difference if we already use Google's search engine: they already know what we search for and why. The thing is that now we'll be able to download paid apps for free on Google Play.