iTunes App Store open for business, with 500 apps for download

Apple opened the iTunes App Store today, just ahead of the Friday release of the iPhone 3G. The phone is already out in some parts of the word — lucky Aussies and New Zealanders! — but while North America is waiting, there’s the iPhone 2.0 firmware update and a new version of iTunes to play with. If you install these updates, you don’t have to wait for a new iPhone before you start buying apps! iPod Touch users, however, will apparently have to wait until tomorrow for the firmware update, which will cost $9.95 — compared to a free update for the iPhone.

What about the apps themselves? Well, for starters, there are over 500 of them, and 25% of those are free. So far, games are leading the pack, with Sega’s much-hyped Super Monkey Ball as the most downloaded app. Other hot games in the Top 10 are Enigmo, Cro-Mag Rally and Bejeweled 2. Apart from games, the most popular download thus far is OmniFocus, the powerful productivity app from Omni Group, coming in at #4.