I am guessing you are not referring to the website position checker, page/site keywords analyzer or competition checker in A1KR, but instead the keyword list related tools:

Beyond the bunch of convenience keyword list tools, there's also some unique things, e.g. in the way you can combine keywords lists. (Notice how the 3-subgroups in the "keywords lists" box has been *combined* into "input" box) - This specific area of A1KR has been created to help speedup editing/creating keyword lists for use in PCC like Google Adwords and other.