Helpchat is really a very helpfull mobile app for recharge and shopping because they tell all current and exciting offer for us by just simple chat.they give minimum 5 % discount on any mobile recharge and dth recharge.their person reply within miniutes whiel we chat so very usefull app for any query about mobile and shopping.they also tell review of proudct and which one is best for us and on which site we get maximum discount.so I always take advice of them.so please friends install it and see.