Currently free without ads https://market.android.com/details?id=com.smartappers.appusage Measures time spent on each app. The most accurate app usage tracker! Accurate to less than a second on Android 1.6 and up. Main features: * Shows app usage by time or number of launches. * See usage for today, the last week, the last month, or since installing. * Click on apps for more information, like first launch, install date, etc. * See which apps to uninstall because you're not using them! * Uses virtually no battery power- only records when you change apps, unlike others which check every x seconds! See how much time you're wasting on Angry Birds or Facebook! Coming soon: Graphing, sorting, and more filtering options!