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If you use your iPad in landscape mode, avoid this calculator. It only works in portrait mode.

Seriously I wasn't expecting such a good calculator with all of these features. Especially with only a $1 for the pro version. Worth it

Using the subnet calculator every time I turn the dial on the right the app crashes. Useless to me now.

I like this calculator! Especially with where you can see your calculation and the answer! I may not know how to use programmer, subnets, matrix, or grapher, but the calculator itself is amazing! Although, I didn't see a couple things. I didn't see anything for fraction calculations. Also degree/minute/seconds calculations. I use that a lot to calculate time played on a game I have on the laptop called Farming Simulator 2013. I have another calculator that does these kinds of calculations, but it would be very nice to see these added in an update! That would make it a little more fun to calculate them! But great graphics and style!

Looks beautifull and powerfull.

This is great because it is free and it has lots of scientific options and tip calc. Also will be great for my apple watch when I get it..