Integral Calculator is described as «Solve definite and indefinite integrals with ease using our free online calculator. Calculate double and triple integrals and get step by step explanation for each solution» and is a Calculator in the education & reference category. There are more than 100 alternatives to Integral Calculator for a variety of platforms, including Android, Mac, Online / Web-based, Windows and iPhone. The best alternative is SpeedCrunch, which is both free and Open Source. Other great apps like Integral Calculator are Wolfram Alpha, Qalculate!, fxSolver and Windows Calculator.