I recently released a new calculator on iTunes, and I would appreciate it if you reviewed it. It is called ABTC Scientific Calculator, and it shows the correct answer in addition to the steps needed to solve it. It has the basic four functions and parenthesis, logs, exponents, powers, sine, cosine, and tangents. For instance with a standard calculator, if you inputted 25+3*2-5*4, it would output 11. With my calculator it preforms one operation per line, until the equation is solved. For example.
This app will be free until Friday, but if you don't read this e-mail before than, the promo code is NP4NYPFTXE74. You can also watch a youtube video of it by searching for ABTC Scientific Calculator.