I started out with CarbMaster, the free version. I really like it the best of the Calorie Track or some of the others I've seen. It is carbs I seek to track most, so this is great for that. However, be aware that if you do like me and start with the free one & choose to move to the full featured one, your logs will not transfer. The foods and their nutritional values transfer ok, but not the actual data. I also found the full version to be sluggish. Both will store BP & BG, but not to the extent of Glucose Buddy, so this is my first line of defense. However, I do wish it included a better food log, something more intuitive and that will store the nutritional information or retrieve it where possible. Also, support from CarbMaster is disappointing. I did get a response, but clearly the author of that email was not an English-speaker. His instructions made no sense. When I asked again, the 2nd response was a bit clearer, but it did not help me transfer the actual data. So, unless/until someone can point me to one that serves at least this same function, I guess I'll just limp along with 2 apps, wishing I could integrate the two. (HINT, HINT!!)