Best calculator apps for the iPhone

If you are looking for some useful calculators on the iPhone then check out our list of the best calculator iPhone apps.  
PCalc RPN Calculator Price: $9.99 For: iPhone and iPad This  iDevice calculator is for students, engineers, programmers and other professionals. True, this app is very pricey but it has loads of features that will surely make the cost worth it.    
Calcbot — The Intelligent Calculator Price: $1.99 For: iPhone and iPad The most polished calculator app to date, you will never miss out on your calculations with Calcbot. Now you can have a standard calculator you can carry anywhere right on your iPhone. With its beautiful design and user friendly graphics, calculating math problems is very easy.    
Digits, the calculator for humans Price: $1.99 For: iPhone and iPad This app will make calculating fun and beautiful on the eyes. With its tape you will never lose track of what you just entered. You can also write comments so you know what that number means.    
CalculatorBox Price: $1.99 For: iPhone and iPad For just 2 bucks you can have four different calculators: a standard, scientific, programmer and statistics. Now you won’t need to buy any calculators if you are a student. You only need just this app.    
Calc for iPhone Price: $0.99 For: iPhone and iPad One very simple calculator app for your iPhone that focuses mainly on the calculation itself. Like the previous app you can also put comments so you won’t forget the components in what you are calculating.