This app was mentioned in 4 comments, with an average of 5.00 upvotes
If you have an android phone I use: https://play.google.com/store/apps/details?id=ballcapsoftware.magicnumberwidget
With that you can put a widget on your homescreen that shows the current magic #. I also have another widget that shows how many games up we are.
During the season I'll configure it to show team record or Magic # if close enough.
https://play.google.com/store/apps/details?id=ballcapsoftware.magicnumberwidget&hl=en
Incase you wanted the app
I'm not counting my phone is