The Weightbot iPhone and iPod touch application is a simple, attractive application designed to track your weight over time. As a weight-tracking tool, Weightbot stands out for a couple of reasons. To begin with, it's got a beautiful interface. Tracking your weight isn't a particularly fun activity, but Weightbot makes it seem pretty cool.
The application includes gorgeous graphs displaying your progress by week, month, and year, your information is backed up online over a secure connection, and you can set a goal weight so you can watch your weight slope toward the finish line.
If you want to prevent prying eyes from spying your weight, you can also set a passcode on the app.
The biggest catch: It's not free. It is, however, available for $1 from the iTunes App Store for a limited time, and while you can probably find countless other free options, Weightbot is one of those apps you may be more likely to use because of its great interface and feature set.