TrackerPro is the swiss army knife for tracking.
In a single app you can track things like: weather, stocks, sport scores, etc.
TrackerPro allows tracking virtually anything with a REST API. Check mashapi and others for available APIs. You are only limited by your imagination!
You can also tap into the internet of things by having your sensors like heart rate device post to AT&T M2X.
Press top and lower button to cycle through the tracked entries. Taping on the watch will also work for convenience.
Press the center button to force an update otherwise the entry gets updated based on the configured schedule.
Long press the center button to disable the automatic tracking for the active entry.