Pandora app is a great tool for every student. It is a perfect tool for solving math problems, but it is also great for calculating statistics.
I use it every day. It is very easy to use and it includes many useful features. You can use Pandora either on your computer or phone. The website is made by two students who love to use Pandora app. On the website they publish useful guides, the latest news, update notes and more about Pandora app.