Graphene

Graphene is a multi-purpose calculator with the ability to compute trignometric, statistical, and integral functions in line with anything a basic 4-function calculator can do.
Graphene supports a Scratchpad that can solve functions, store variables and a Graphing view that can graph functions.
Rather than spending hundreds of dollars on an expensive Graphing calculator, Graphene can solve all of your problems with ease.
Need to use a special character such as π or ∞? Graphene comes equipped with a standard symbols keyboard that supports multiple different symbols for different calculations and graphs.
Let Graphene be your one-stop shop for any calculation you might have to do, whether it is as simple as calculating the tip for a restaurant bill or solving an integral for your calculus homework.

Features :
Standard Calculator
Scientific Calculator
Programming Calculator
Graphing Calculator
Spreadsheets
ScratchPad
Integration
Linear Regression
Notes