I love this program, just wanted to alert people that want/need to create RAR files, iPack can't do this out of the box (although from the description it looks like it can). You still need RARLABs rar binary for OSX, which sells at US$30

haha this is great, out of my own experience i feel obligated to admonish that this application is entirely identical to the other version created by the developer, "ipackr." I had been perplexed as to what the differences of the two were while I was searching for a simple gui for compression rather than using command line, and until recently when the application was released free for a limited time, I was still left without answers. It wasn't until I had both applications open in a double pane view when I realized the extent of their similarity. In conclusion, the application gets the job done efficiently, however, I feel consumers should should be more aware of how the applications are distinguished in more extensive detail

Compression utilities are things that should be able to be demo'd
prior to purchase. There are dozens available and everyone has different taste as far as what they like about each one. Speed, interface, and preferences vary considerably. So to expect people to plop down money without a chance to take it out for a test drive is unreasonable.