Calcbot is described as «simple and beautifully designed calculator for your iPhone, iPod touch and iPad. You»ll never open the built-in Calculator app again» and is a Calculator in the education & reference category. There are more than 50 alternatives to Calcbot for a variety of platforms, including Windows, Android, Mac, Online / Web-based and Android Tablet. The best alternative is SpeedCrunch, which is both free and Open Source. Other great apps like Calcbot are Qalculate!, Windows Calculator, Numi and Google Calculator.