Paytm is a very easy and usefull app. and right now if you are in india its must recommendent app now these days. as we are going cashless paytm is helping us.you can pay your recharges of mobile, dth, broadband. its also helps you to pay your electricty and water supply bil. gas reffiling bills and extra. you can pay your institute fee also. and its has online shoping option also like other apps where you can buy tons of goods , electrical items, clothings and many more. its prity easy to use.you can sign in by secure id given by paytm or by facebook and gmail.its easy and secure.