Ive used DP for several years now. There really is no competitor app if you are serious about keeping track of BG, meals, carbs, exercise, insulin etcetera. Use other apps if you just want a BG log.
I upgraded to Pro. The monthly fee is minimal and Im Ok with it if it helps them keep the app fresh. The extra features are not something I would ever use.
Couple of warnings. As diabetics we frequently have issues with our eyes. Add to that expected challenges as we age. Most screens especially input screens use pale blue font over a white background. Its a real struggle for me.
I also have to vary insulin/carb ratios by meal or time of day e.g. I need more insulin to cover lunch. I used a Palm app (EZManager?)
YEARS ago that allowed you to vary the ratio by meal. It cant be more than 6 lines of code. Theyve resisted this suggestion which is disappoint. But then Im getting pretty good at dividing by 13!
Steve-GGGG about Diabetes Pilot Pro