This app will not be useful for everyone, but if the features described match your needs then this is a great option, and it's free too.
Android users can get Graphing Calculator for free.
It supports basic arithmetic, square and cube roots, apart from trigonometry, logarithms and percentages. Getting it to perform a simple cube root calculation was a problem because it couldn't recognise our input properly. My Script Calculator is free on i OS and Android.5.
PCalc There are several great scientific calculator apps on the i OS App Store, but PCalc takes the cake because it also has a beautiful Notification Centre widget.
Solve4x This free i OS app comes with an equation solver where you can either manually type in an equation for it to solve, or you can snap a picture and automatically process the entire equation.
You can also use a photo that's already been saved to the gallery.The app includes a range of functions including trigonometry, logarithms, exponential functions and it includes an equation history so you can see what work you did to reach your results.Equation syntax highlighting, bracket highlighting, and separate modes for scientific and engineering calculations make it a great choice, but most of all, this free app is also ad free.However, this app does have a nice interface, functions from exponential to logarithmic to trigonometric functions.It also has a separate tab for history where you can see the calculations you have carried out.It's time to say goodbye to those guides and embrace apps that make solving complex mathematical problems as easy as clicking a picture!Today, you can choose from from learning tools that help you track formulae and learn algebra, to apps that let you solve equations by simply pointing the camera.The app shows solutions on screen and shows a "Steps" prompt that shows how it solved the problem.It also keeps a log of all the equations it has solved, so you can quickly refer to an older problem if needed. The Android app is expected next year, according to the developer's website.2.Windows Phone users can download Scientific Calculator for free.8.Graphing Calculator An actual graphing calculator like the TI-84 will still cost you around 0, but you'll find plenty of apps with the same functionality.