Earlier today, Citibank launched a dedicated iPhone app (iTunes link) powered by mFoundry. Previously, certain Citi cardholders could use the Firethorn iPhone app, but there was no App Store listing under the Citi brand.
The app, which is free to download, is currently number 10 in the App Store Finance (free) category. It will likely rise to the top, at least briefly, as Citi customers download the app.
The app is featured on the Citi homepage today (see first screenshot below) and is front and center on the Citi Mobile landing page (second screenshot below). The bank has also posted a nine-screen demo of the app here (see inset).
Anyone that’s ever used a mobile website will appreciate the Citi login screen (see inset below). A jumbo-sized numerical keypad is included below the signin area to make typing the PIN easier on the small screen. 
The Citi application does the usual four functions:
- check balances
- transfer funds
- pay bills
- find Citi branches and ATMs
The bank wisely informs users that their iPhone access can be deactivated immediately in the event of a lost or stolen phone by calling its toll-free number.
With this launch, four of the 10 largest U.S. consumer banks have a dedicated presence in the Apple App Store: Bank of America, Chase, and PNC Bank.
Citibank homepage features the iPhone app (2 March 2009)
Left: Landing page for Citi Mobile (link, 2 March 2009)
The Citibank application page in the iTunes App Store (link, 2 March 2009)
Note:
1. See our Online Banking Report on Mobile Banking for more information on the market.