My Daily Metric Readings
My Daily Metric Readings is a tiny utility designed by Bob Larsen to track the level of your blood pressure, blood sugar and weight.
If you find it necessary to record your medical measurements on a regular basis then a program like this will make it easy for you, as it has obvious advantages over paper records. Besides, the program may help your doctor to get a better understanding of your health condition. No, you shouldn't expect the application to act like a professional one, it just records the measurements you make and draws bar and line graphs for you to see the progress.
The interface can be called minimal: on the one hand it's not really appealing, on the other hand it is very simple and easy-to-use.