I'm really lazy and have a terrible memory, so I wrote an 'App' to help me keep track of EVERYHING. BG, SG, ISIG, Finger prick locations(70), Carbs, Basal settings, Bolus detail, etc.
I do all of my data entry on my phone and all of my reporting and analysis on my laptop.
I use a polar coordinate system to track infusion set and sensor locations using a protractor (with a piece of dental floss glued to it) so I can get the angle and distance from the origin (my belly button). Thinking about using alternate sites, so I'll need to rework that portion.
The app also automatically texts my wife with BG readings and other 'events'. I did this (I'm lazy, remember) so she would quit calling me 8 times a day to find out how I'm doing.
I'm finishing an Rx and Pump Supply inventory tracking system, using a barcode scanner App, to read barcodes on the packages & medication bottles to keep all of that organized Lot #'s, Expiry, dosages, dates, doctors, etc. I hate manual log books, the phone is so much more convenient.
This weekend I'm working on integrating with my weekly pump data dumps from Carelink. This way I can drill down to great detail with the sensor data. I can create a much faster and more capable interface to the data than what is available through Carelink (which by the way is not accessible on mobile devices) which has to be access through the internet with no capability for offline access.