Looks great for an alpha.

Some suggestions:

1. Improve the interface and make it clear how to use the app. The language isn't clear to me, such as the difference between a 'tracker' and an 'area'.

2. Make it so I can enter a days worth of data very easily. One single form for all my trackers.

3. Make it so I can compete/compare myself with other users. Maybe just friends that I select or maybe any other users. You could add user ranking charts, graphs, etc.