Zappcash is a new recharge app and genuine too. I am saying this because I have personaly tested it and results were positive. It is not at all difficult to use this app. All you have to do is download this app from playstore and use this app in the same way you use another free recharge app. Interface function and concept are all same so you won’t face any problem if you have used any free recharge app previously. Zappcash is giving Rs 20 per Referral so you just need to refer this app to your friends after registering for the app. You can find your referral link from main menu >> refer and earn tab.