Free Graphing Calculator 2

I used this app for years on the IOS platform, as well as its predecessor app. It is an extremely capable calculator and graphing tool, and there's more under the hood I didn't realize for a while. There are multiple methods of graphing input, as well as a nearly complete reference guide to all things Algebra and calculus. The only problem I have encountered is that at this point in time, all of the icons at the top of the screen are doubled, and only the second set of icons works for whatever reason. Other than that small issue, the only complaints I have are that neither typing the "Enter" key nor "=" on a keyboard insert an equation, leaving clicking the "=" onscreen button as the only way to do that. Besides those issues, I absolutely love this app, and have recommended it many times to those who need what it can do. -UPDATE 4/26/17- I have discovered, to my disappointment, that this app only exists for Windows computers and tablets, but not for Windows 10 Mobile. Please add!

simple but good

easy to use and not hard to find things