As Dogshooter showed it is pretty easy to make a paper version.
If one is going to shoot beyond 15 -20 MOA of drop correction then secondary charts or a computer make a lot of sense to comp for density changes from your initial chart or Drop Compensating Turret.
I have 2 of those sensor watches and use the sensors from time to time. Especially useful when gathering data or any other time I want the precise density.
I have one on my wrist in this picture. Didn't need it as the shot was at 450yds but then again it didn't get in the way. Wyoming Blacktail.
John Burns
I have all the sources. They can't stop the signal.