This app was mentioned in 3 comments, with an average of 1.00 upvote
Not exactly a service, however, I've been using BG Monitor Diabetes Pro (Google Play Store) in combination with my Omnipod PDM. The BG Monitor doesn't sync with anything, but I really like having a separate log that isn't connected to my PDM. I paid for the pro version and I love it. It can export to Excel, make auto back-ups, has a solid food library, and I can put in all my pump settings and ratios.
Android users should try BG Monitor Pro. It definitely deserves more attention, has plenty of features and is beautiful and a nice interface and UX.
BG Monitor Pro. It's really well written, has a nice user interface and has plenty of features.