Marcio Jose Sanchez—AP

Apple Watch preorders start Friday, and even though it's not exactly cheap—the low-end version will cost $350—money-minded consumers might do well to take note. Smartphones have in some ways transformed personal finance, putting powerful budgeting, bill-paying, and market-tracking software in the pockets of millions. Now the Apple Watch promises to give us essential financial information right on our wrists.

Consumers can't even get their hands on it until April 24, so not every company has gotten around to porting their software to the smaller screen, or announcing app prices. And we haven't been able to try them out yet. But we've hunted around and compiled a list of the 15 coolest looking personal finance apps for the Apple Watch that we know about right now.