http://wccftech.com/final-ios-11-vs-android-oreo-visual-comparison/

Here’s our full and final visual comparison between iOS 11 and Android 8.0 Oreo. We will compare corresponding features between both the operating systems using side-by-side screenshots.

The last time we compared iOS 11 and Android Oreo, both were in beta and the latter didn’t even have a name back then. It was being identified by the moniker ‘O.’ Now though, things have come pretty far and both operating systems are available in the public domain. Android Oreo’s availability is extremely limited but you can drive it around if you happen to have a Nexus 5X, Nexus 6P, Pixel, Pixel XL or a Pixel C. iOS 11, on the other hand, can be downloaded on a wide variety of devices immediately. If you have an iPhone as old as the iPhone 5s, you’re well into the compatibility list. iPads are, of course, included in the list.