The GlucoLab, manufactured by Infopia , provides basic all the basic features needed for blood glucose testing.
Note that the GlucoLab test strips require a 1 microlitres blood sample size which is relatively large by modern standards.
The GlucoLab allows the user to set their own averages, so you can set how many days you want the meter to provide an average over. Up to three different averages can be set up.