Im using mcent browser from past 2 months and Ive like recharged my mobile sim 5-6 times and the amount is credited within minutes.
Yes I have done recharges of nearly Rs. ( 100+ 44+ 10+ 20+ 14) = Rs. 188 and I think thats quite better than nothing.
The user interface is also user friendly.
What I dislike about this app is just one thing that user cant pin the pages he want on his home window, yet, he can create a shortcut to his home screen, which is ok but I didnt appreciate that that much.