communication app ?

[Wotchered]

Does anybody know of an app that will allow someone to type in the largest print size on an Ipad, that has a good size keypad on screen ?
I have tried Notes (native version) but keypad normal size and greyish. The elderly person who needs to communicate does not speak clearly ,and has v poor eyesight.
We do not need internet useability, basically just a paper replacement(shaky hands)
Any ideas ?

 

[Wotchered]

yup , nowhere near size required. but thanks. I have found an app called, ?Big Note' that will probably do it, not that easy to find out how to make it work but pretty good if you go to bold text in settings (enhances keyboard)
I mention the detail in case it might help someone else.