There are several browsers available in google play stores.But mcent browsers provides your chance to earn points through searching ang then convert your earned points to money that you can use to recharge your or any other mobile numbers.
First you have to install the app from google playstore.Just after install you will get some free points. You can invite your friends. If your friends install the app from your provided link, you can earn 9000 points. 1000 points equals to ₹.1.
Only negative side of the app is that there are frequent adds while using the app.
Though you can overlook this negative side as you are getting paid for searcing.