As a diabetic, I have tried and tested dozens of sugar logging apps to much frustration, since the standard is abysmal in terms of usability and features: Most have way too many features and terribly inefficient UIs, and some are primitive apps with no features.bgmonitor strikes the best balance I have found so far and has some great potential. In the end, the one thing that is most important for such an app is: Does it encourage and support you in collecting LOTS of high quality data? bgmonitor is currently the best but there are some improvements possible to speed this up. I will be in touch on that... + Minimizes unnecessary steps before entering values (the most important function: Log) + Decent statistics and curves + Data export possible. To improve: - The pipeline between data in the app and the view that a doctor wants to see is not supported well yet (neither is it in any other app for android, it seems!). Took me hours to crunch this in Excel. - Deleting my data on the upgrade was something I am willing to forgive. Once. Please don't do that again. Ever. - Some of the recent changes decrease usability (time sliders, removed insulin type!? I need that!)