A free program for Android, by Ynapps.

The purpose of the app is to help you manage your diabetes. With this app, you can easily add, modify or delete daily blood glucose levels, time when test was done, meals and insulin dosage with remarks.

You can view history for specific date range and analyze them using pie charts, tables and statistics.

The app supports the following formats:

mg/dL 

mmol/L

The app also allows you to set your own blood glucose target values.

This app can export data in the .xlsx format.

You can share the data with others by sharing the file or sending it by email, etc.