I purchased the new iPhone native app "My Words Korean". It's very well done. It lets you get 10 new words every day, hear audio clips, try word matching and save terms in a Word bank. Very colorful and nice user interface!
I was pleasantly surprised when I heard the familar voices of Keith, Seol and other K101.com hosts! Put them on the main launch screenwhen it loads!
Nice work and I look forward to learning more.