Paytm now the largest e-wallet company in india.it gives you place to store your money and transfer them to friends, family, retailers etc.it has a method called promocodes through which you can add free money, you can get cashback on recharges, bill payments, movie tickets, coupons etc you can add money of Rs.15 with FREE15 promocode only new users now a days there are many apps and websites which give you paytm cash for browsing and doing some works so it is the best to store money and also to earn money so surely try it.