Good but not perfect.

Almost all the Mac App Store Unarchiever apps , have the same functionality , because unarchieving is not anything that someapp can do better than another , the apps that work , they unarchieve the same, So another point that really matters is the design , iZips icon has a good design but that isnt seen very much because it stays on the apps folder and its not useful , but when a rar file is downloaded the icon that it has is awful, (like the icon in the first photo of this app) , and i think that you should also make that icon better , like the one of the app. That is a good thing for an update and i think therell be more success with this app. People buy the best unarchiever but if they doesnt get a nice icon they arent soddisfied , so i think it will need an update. Good Luck :)

OltiCuni about iZip - Zip - Unzip Tools for Archive Files, v1.2