Glucose Buddy is highly regarded for managing diabetes. It was ranked the number one diabetes iPhone application by Manny Hernandez, the founder of TuDiabetes.com. The product is a data storage utility into which you manually enter periodic glucose numbers, carbohydrate consumption, insulin dosages, and activities. You can view all of your data on your free Glucosebuddy.com online account, where your iPhone automatically syncs your logs. You can also use your phone to access the Glucose Buddy Forum, where you can post and read articles, questions, comments, and other useful information.
The web site includes this tour, after which you can sign up and download the iPhone application to begin uploading your log entries.