Is my air consumption...bad-ish?

[MiloR]

I could take pics of my gauge at the beginning and end of each dive -

I am going to keep a small slate in my BCD pocket for starting and ending pressure and any other silly info I always seem to have forgotten by the time I do my logbook. Just another option maybe.

 

[Kimela]

You can either download the dive data from your computer or input the data manually, and it will compute your SAC/RMV. My dive computers are AI, but if they were not, I would have to input the start/end psi into MacDive and you can select whatever tank you used for the dives. I find the app very easy to use, and accurate without me having to do the math computations.

Favorite part of that quote - "without me having to do the math computations."!