Topic: Is there any way to create your own variant of a character sheet?

Me and my group use a mixture of 2e, 3.5e, and 5e. My Dm doesn't like the modifiers for the characteristics (Strength, Dex, etc.) and has made other sorts of changes that come with blending editions, therefore the 5e Character sheet just wont work. We love using this app so far and have had a great time with it, but I like to further my background and lore as well as notes i would have outside of game nights so i want to use the character sheet function to have it with me whenever. Anyone know of a way? All help is appreciated!