Finally a calculator which looks good and has what you need! If you feel like simple calculations just use it in a portrait mode. However if you turn the screen you will get scientific calculator including features like: Traditional algebra operations. Braces. Sin. Cos. Tan. Ctg. Ln. Log. 1/x. Factorial. Percent. Sqrt. Abs. E number. Pi number. x^2. x^y. Have fun; ).