Visual UI testing is more than just testing your app on Desktop browsers and Mobile emulators. In fact, you can do more with Visual UI testing to run your tests over physical mobile devices.
Visual UI testing compares the visually-rendered output of an application against itself in older iterations. Users call this type of test version checking. Some users apply visual testing for cross-browser tests. They run the same software version across different target devices/operating systems/browsers/viewports. For either purpose, we need a testing solution that has high accuracy, speed, and works with a range of browsers and devices. For these reasons, we chose Applitools.