I have installed the App crown-it through an whatsup referral link and iam satisfied with this App which provides gift vouchers, coupons and cash backs for purchases. Every week we have free rush competitions and there are lot of prizes distributed like iphone, flipkart, book my show, amazon gift vouchers. The App provides us the feature to collect perks and crowns by uploading Bills of any grocery, fuel, medical or any other bill and we get crowns as rewards which can be redeemed. I have redeemed flipkart e-vouchers worth rs 250 by winning a weekly competition. The App also give us the chance of playing games and win prizes and the only condition is we have to upload any bill. The App has the option to recharge your mobile number or DTH number when we have collected the required number of crowns. I would recommend this app which is legit, trustworthy and provides better customer service.