This app was mentioned in 2 comments, with an average of 1.00 upvote
I found this android app last night that let's you do all of the calculations on your phone if you input the guide number table into it. I tested it out last night and it worked - I was able to get a correct exposure using the calculations from the app! So you could use the app too instaed of displaying the distance/aperture readings on your Canon or Youngnuo
I found the guide numbers for my flash, and it looks like this android app can help me fill in the missing pieces from that