Calculator²

I have this app on my phone, tablet, and computer. It is the same in all three places. Love It. I am an engineer, and I use this app every day. It does everything I ever need. I e-mailed the author about a suggestion, and he responded. He said it was a good idea, and it will be in his next update. The program is easy to use, powerful, fast, and cross-platform consistent. I highly recommend it.

As an engineer, I can say this calculator is a must. Has every function, constant, and unit I use on a daily basis. Although it doesn't not have more complex features like graphing or calculus, it does arithmetic simply and quickly. As far as a free calculator applications go, this is the best I used on any platform. If you need more powerful mathematical analysis, I recommend using Wolfram Alpha or it's offline counterpart Mathematica, neither of which is free.

**Edited** It has all the functions you could ask from a scientific calculator, it's stable and well adapted to win10. It shrinks in a smart way too when you are in tablet mode, unlike some apps that don't seem to realize what OS they are in. However, there are some flaws: 1) I can't figure out how to erase things when I have a longer calculation. I can only clear all of it, or the last digit. But I can't go back and fix just a part of it. 2) I wish that you could click anywhere in the calculation you're doing and edit, or re-use and edit an old entry.

Awesome app! I have yet to find anything better. But what good is a scruple and foot-poundal? Can we get a few more torque conversions like ounce-inches and newton-centimeter, etc. Also, how about the option to hide units that are less relevant?

Just like the regular Windows 10 calculator that is included, but on steroids! Does so much more. Just hate the colors, I prefer the flat design of Microsoft's calculator. But this is an amazing addition everyone should get!

I got it for the financial calculator and paid $1.99. It is not intuitive. The loan functions don't consider interest. It did not work for what I am looking for.

It's a great substitute for a scientific calculator. For my uses, all functions are there. It's not easy to use for conventional purposes though. PS: This app is a little unstable in it's updates.