Typically, FamilyTime uses very little battery on the phone. Most of the clever stuff happens on the Internet and on your web-based FamilyTime - Dashboard, so the app itself needs very little power.
Also, we have programmed the app so that it uploads the data collected from your child’s mobile device after every 20 minutes. It checks the mobile device for new mobile activity and data every 5 minutes, but uploads the data onto the server after 20 minutes. So in an hour, the app completes 3 cycles. This way, the app consumes very little battery.