This is a very small known bug with the charting in HealthFrame 2.0, which causes dates along the x-axis of some reports to be misreported by 2 days.
Please note that even with HealthFrame 2.0 - you can safely track and save all your data. This bug is restricted to graph report generation. You can export your data to CCR or any other common format, and verify that the data recorded remains in-tact.
This bug has been fixed for our upcoming 2.1 release (probably available by mid October).
This new release will contain tons of new features, including vastly improved reporting functionality - as well as more accurate graphing ;-).
Thank you for your interest in HealthFrame, and most especailly for your report of this bug. If you have another other feedback: bugs to report, features to suggest, we welcome and encourage user feedback. Thats what keeps driving us to keep HealthFrame the best PHR ever.
Support Team.