Wallaby
wallaby managing money

The promise: Determines which credit card is best.
Price: Free
Available on: iPhone, Android

If you have multiple cards -- and especially if some have awards that change frequently or give extra points at, say, gas stations -- this app will help you use them strategically.

Choose a merchant, and the program calculates which of your cards will give you the best deal (it may also show you a related ad).

Even rewards junkies sometimes use the wrong card, says Randy Peterson, a frequent-flier expert at InsideFlyer.com: "Wallaby gets rid of the guesswork."


  @Money - Last updated March 19 2013 03:55 PM ET
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