Nokia Battery Monitor shows App usage and other statistics.
It shows estimates of certain important apps like Camera, Web, Music player etc
Also it shows statistics of past week and current app usage times.
It also gives you tips on saving battery life.
Moreover, you can upload your statistics to Nokia for research purposes.
You can Download it for free, from the Ovi Store.
The current version is 3.0
Ovi Store Link
http://store.ovi.com/content/132519
