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PCalc 3 review: Standout iOS calculator gains programmability and polish

The basic Calculator app is good for simple calculations, but if it’s a full-featured scientific calculator you want, there’s no better app than PCalc.

square cash request

Square Cash’s new feature helps you hit your friends up for money

Square’s cool new Cash request tool lets you call in debts from friends and family and keep track of who's paid.

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Level Money launches on Android, tells you your daily allowance

Categorized-based budgeting too hard? Level takes a different approach.

Fat wallets begone: Coin combines your payment plastic into a single smart card

Coin's 'one card to rule them all' dream certainly seems alluring, but this plastic needs to stay close to your smartphone.

Hands-on with Square Cash, a free, dead simple way to send money via email

Square Cash makes sending money to friends dead simple, but that simplicity could lead to a wave of phishing attacks.

Level Money wants your wallet to turn its head and cough

Forget budgeting. This is a whole new way to watch your finances.

Concept art of a storm hitting NYC

Gimme shelter: Wall Street braces for hurricane season

Heading into the heart of hurricane season 10 months after Sandy slammed the New York metropolitan area, Wall Street has had time to reassess and revamp backup plans.

Wall Street

NYSE builds business around resilient infrastructure services

After the terrorist strikes of Sept. 11, 2001, the New York Stock Exchange (NYSE) learned some valuable lessons in keeping a time-sensitive financial trading network alive during a time of crisis.

on pcworld.com

Sorry, libertarians: Bitcoins are currency and can be regulated under U.S. law, says judge

If Bitcoins are the currency of choice for a computerized Wild West, the sheriff in town is trying to impose some order.