A free program for Android, by mEL Studio.
Diabetes diary is an excellent tool for anyone with diabetes. You can use it to log your blood sugar levels, medication, diet, and exercise. In addition, you can also add tags to each record to make it easier to analyze later.
With a regular sugar log, you can easily observe trends in your blood sugar levels. Learning about your trends will help you determine what you need to do or change in your activities. This also helps your doctor identify a diabetes treatment suitable for your needs.
The app allows you to export all records into various file formats. You can also use email.