Chemical Equation Balancer 1.3
the author of this app says:
Ever needed to balance a chemical equation but couldn't do it by hand? This chemical equation balancing app will balance all types of equations in a fraction of a second. Just type the equation in, making elements capitalized and compounds separated by a "+" sign and an "=" sign to show the other side. Touch "Balance" and your equation will be balanced in an instant!
This app includes added support for inserting parenthesis for polyatomic ions and brackets for charges in oxidation/reduction reactions.