Math Keyboard app for iPhone and iPad

MathKeyboard its a keyboard that helps you with symbolic typing, for the ones who struggle to get a decent math text in common apps, this keyboard is fully compatible with all instant message services.

VECTOR ARROWS AND OVERLINE:
You can vectorize any character in qwerty or Greek keyboard.

SUPERSCRIPT AND SUBSCRIPT:
With superscript and subscript text you can type exponents, limits, and even combinatorics like: e³, lim ₓ->ₐ f(), ³C₂.

COMBINATORICS AND PROBABILITY
Quick type for common expressions, like P() or C(,), and symbols like ∪ and ∩.

CALCULUS
Lots of calculus symbols from sum to triple integrals and nabla operator.

LOGIC
Logical operators as "and", "or" and "not", existential quantification and implies.

GREEK CHARACTERS
Full Greek keyboard with support for Unicode superscript and subscript.

I would like to ask you for some suggestions for new features, in the future we can create a new tab if you guys want to or even create a community tab with some crazy features or symbols, comment your ideas and they can became true.