WolframAlpha has been updated to version 1.8 to bring in support for iPhone X and some bug fixes.
Across thousands of domains--with more continually added--Wolfram|Alpha uses its vast collection of algorithms and data to compute answers and generate reports for you. The Wolfram|Alpha App plugs directly into the Wolfram|Alpha supercomputing cloud, computing answers to your questions quickly, efficiently, and without draining your battery.
Take note of this customer review
I recommend that people ignore the one star reviews, those people have no idea how to use the app. They think this is some search engine like google but it’s more suited for running calculations. If you’ve heard of Mathematica and know what the wolfram alpha website is then you are basically getting full support with this app for peanuts compared to what the website charges. It’s not as mathematically powerful as Mathematica but for running quick calculations on the fly, this is indispensable.