The iPhone's Best Business Tools

There is a Loan Calc (99 cents), a Mortgage Payment Calculator (99 cents), daily expense tracking (IXpense, $4.99, TapExpense, $4.99 and iSpend, $15.99) and Day Bank ($3.99) a simple but powerful pocket money manager.

As for keeping track of investments, there is the free Bloomberg news applet, iGold ($7.99), which automatically retrieves and displays real-time price quotes of precious metals -- and SplashMoney ($9.99), which connects to your online bank so you can create, track and analyze your spending with customized reports. TripLog/1040 ($12.99) is somewhat self-explanatory.

Oracle(ORCL Quote) has a free program called Oracle Business Indicators which provides secure, real-time access to business performance information right onto your handset.

Salesforce Mobile lets you keep your customer information instantly accessible through your iPhone. It's free if you have an unlimited edition Salesforce account or an enterprise or professional account with a mobile license.

If you have access to a VNC server, Mocha VNC (free) lets you use your iPhone to connect to a Windows or a Mac (OS X) computer and see files and programs and resources as if you were sitting at your desk. Very cool.

ZeptoPad (99 cents) is a portable whiteboard applet from Japan which lets you add ideas, sketch and "mindmanage" your wildest dreams. LionClock Plus ($79.99) and Lite ($29.99) track time spent on projects and then let you create and email invoices directly from your iPhone.

There's even an amazing, free little program from CareerBuilder.com that lets you search (by keyword, job description and salary) on your iPhone through nearly two million jobs on its Web site. You can also narrow your search by using the iPhone 3G's built-in GPS system which will help you find jobs nearby your phone's exact location.

Remember, these are only some of the programs available in only two categories -- in the first week of existence. We'll revisit Apple's App Store soon to see what else TheStreet.com readers love and hate.