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’s cool new Cash request tool lets you call in debts from friends and family and keep track of who's paid.
Your wallet will thank you.
Categorized-based budgeting too hard? Level takes a different approach.
Coin's 'one card to rule them all' dream certainly seems alluring, but this plastic needs to stay close to your smartphone.