We're currently testing My Sensible Diet , it will be available soon though - If you like you can test it too.

My Sensible Diet version 1.0 is currently in Beta release, being tested by the Macintosh Community. When released, you will be able to use a fully functional production version of My Sensible Diet for 30 days, after which you will be required to purchase a registration key for USD 20.00. Please feel free to download and test run the current Beta Version.