TL,DR: This app is the best. Health and Apple Watch functionality rock. You should download this app and buy the in app purchases to support these awesome developers!
I use this app every day to help keep me in control of my diabetes. This app is simply the best free app when it comes to the features that you get. Not many other logging apps support Health and the Apple Watch. The Health integration is huge as it allows me to log my readings in this app and track my carbs and meals in another app but I can see all of the data in Health. My doctor loves the pdf reports that I can send through this app along with my insulin doses and other notes. Something the logs on my meter just cant do. The only issue I have with the app is that for reporting purposes on the line graph, it averages the data into three groups where I personally think it would be better to have the chart show a line for every time tag as I usually only test before meals and before bed. But even this is not enough for me to knock anything off this app. Get it and buy the in app purchases to support these awesome developers.
ME_101 about Blood Pressure & Glucose Pal, v3.0.1