I want to use android phone screen as a label for taking photos, which app?

[mat the trasher]

So I'm looking for an app that I can use the full screen of my phone as a label for placing beside something I photograph, using the largest font size that will fit across the screen give the number of characters. Normally I would write on the item or on paper and place beside, but as I have alot of the tag data on my phone it would be useful just to copy it in and use the phone screen. Tried to search but only found note taking apps.

Thanks