This app sums up your call, text and data logs. Different billing modes and periods are taken into account in the summation. See <a href="http://www.4.ub0r.de/android/callmeter/rulesets">this page</a> for rulesets. Changelogs and FAQ are on the website wiki. The non-Free Google Admob in the source code was replaced with an open-source library that does nothing. Newer versions of this app are non-free due to the use of play-services.