If your phone is an Android, you can put it into your Google drive and access it anywhere. That comes preloaded on Android phones so you don't have to download anything else.
The one big drawback to that is that is always opens to box A1 in Excel. When you have an extrodinarily high amount of information in the chart it can be troublesome to get to where you want to go.
If you have an iPhone I'm completely clueless and cannot help on that.
VERY slow trading due to health problems. Not transferrable so safe to trade with, just moving is painful and can't always access the cards.
Cardboard History My COMC
New Collection Website: Cardboard History Gallery (Still under construction)
Tips on how to make your scans look like the card does in hand (No more washed out, fuzzy scans!):