Go to Microsoft Templates. In the search box there, just type in "blood sugar" and a bunch of spreadsheets, trackers, and charts will pop up. I found several good one's there and have been using ever since. But the one here at this site works ok too.
I don't access my internet all the time so its handy to have it on a spreadsheet for me.
Why not use the online MedHelp Tracker on your home page? Or create your own Excel spreadsheet.