smartbro is a new Android app from startup Optinno Mobitech Pvt Ltd. that helps you save money on prepaid by offering you detailed bill for all your calls and data. It is based on operator popups and uses its own data analytics engine to figure out correct latest talktime balance and automatically shows it on the dialer, before making a call so that you can get an idea on how much balance is left. The company says that it is using proprietary patent pending technology.