Yesterday, Intuit launched its first native app for the iPhone, Quicken Online Mobile. It's already risen to number four in the Finance category (note 1), and will likely hit number one given the number of Intuit fans using the iPhone. Currently, E*Trade's new Mobile Pro claims the top spot.

Intuit has incorporated some interesting features including this user-friendly "what's left until payday" feature. Users can access a graphical map of their future balance level (below) and get a warning (right) if the account looks like it will run out before the next payday.

Intuit also uses the GPS/location-based capabilities of the iPhone with a built-in ATM finder (click on inset for larger view). And finally, users are able to input transactions on the fly to get a real-time look at the impact to their budgets on the latest expenses.

The two-minute YouTube video (link) is worth watching to see how to position your iPhone PFM as a mobile financial assistant (speaker is Intuit product manager, Barron Ernst):

There are a number of personal finance apps available on the iPhone platform including Mint, Wesabe (announced Tuesday at FinovateStartup), MoneyTrackin, iBearSoft Software, and dozens more. 

Notes:
1. Quicken's mobile app is number four in the free apps section of the iTunes Finance apps section as of 8:30 AM Pacific time, 2 May 2009. It has 73 user reviews with an average 4-star rating (excellent). In comparison, Mint which launched its iPhone app in December has nearly 13,000 reviews.
2. According to VentureBeat, Quicken Online passed the 1-million user mark in mid-April.