I am an iPad user with visual disability and could never use the virtual keyboard as I can't see or feel the keys. So when Apple allowed custom keyboards, I started working on my own keyboard to let me finally use my iPad the way i wanted to from the beginning.
4U2C Keyboard will allow you to adjust the letter's font size on the keyboard, and even the emojis font size, so now you can finally see and send the right emojis.
There are great options of themes available, which are easy to see and more.
4U2C Keyboard changed how I use my iPad and it will help many others