
KIF works really well for what it does. I found writing tests to be straightforward and I enjoyed the workflow of writing everything in one language (Objective C) and seeing the results of my UI tests in XCode right next to the results of my unit tests. Review collected by and hosted on G2.com.
I have no complaints with KIF itself. It's a great library for what it does and when it was made. The syntax is not particularly beautiful but that probably has more to do with Objective C itself than this library.
The main issue is that other tools have come along that are probably more helpful, including increasingly better support for UI testing within XCode itself, but also tools like Appium which allow you to use existing Selenium toolsets and also to connect to Sauce Labs itself and their many devices and versions. Review collected by and hosted on G2.com.