Google Opinion Rewards gives you free Google Play Credits as a reward for completing surveys. This app was previously available only in the USA, but now it is available for India and some other countries since March 2017. I had downloaded the app in June 2017. You can download the app from Play Store.
When we open the app for the first time, we have to give our Gmail address. Then it will send us a sample survey. This survey will not give you any money, but it will help Google to find the perfect surveys for you.
You will get surveys 3 - 4 times a month. Each survey takes about 3 - 4 minutes to complete. Each survey will give you Rs 3 - Rs 16 Google Play Credits per survey. I have earned about Rs 86 in 3 months. I had recently bought a bat in a game, whose price is Rs 68, with the earnings from this app.
The layout of the app is very simple. There are only 4 tabs which are Home, Reward history, Settings and Help and Feedback. There are only 2 settings option.
We don’t have to check the app again and again because when a survey arrives it will show you a notification.
Overall the concept of the app is very good. I would suggest you to install the app as soon as possible if you are a frequent shopper on the Google Play Store.