Blood Sugar application is the best way to analyze and maintain your sugar level.
This app has many other way to main diabetics:

1) Medication Feed: you can easily add the medicine name, dosage form like tablet, capsule and Dosage in mg,ml,g

2) Insulin feed: Add the name of the insulin and their type like Rapid, Short, Long

3) Blood Sugar: Add the sugar level, you can choose the timing and date of level to track it.

There are other feature like:

Statistics: easiest and simple way to to know the sugar level.
Backup: You can easily import or export files
Add HbA1c record.
Add weight.