I am using mobikwik from one year. From personal experience I felt mobikwik interface is quite easy for all to recharge their various networks at 24*7. Mobikwik also provides an exciting offer for lumia series of LUM300 wallet offer by adding 300 we get another 300 to our wallet and many offers with bookmyshow, pizzas, cashback offers etc.
We can also transfer our wallet amount to our bank account. It becomes easier for us in recharging simply sitting at our homes. It is 100% secured app.