The Smart Body Tape Measure by RenPho (I get no indorcements or fees for talking about this) It's very easy to use. Just turn on the tape measure, have the app open take the measurement and hit the body part and it logs it for you. If Trainerize could sync to this app, you could be done in minutes instead of the hour of fumbling it tastes me to do these measurements that I can't swear are correct. Now I know they are