5 Free Apps to Help Keep Surprise Travel Expenses in Check

Most people factor transportation, accommodations, food, and sometimes even souvenirs into their travel budgets. But even the savviest budget-minded travelers can be caught off guard by surprise expenses.

Overlooked expenses abound -- surprise Internet charges, taxi ride overages, and things like realizing the guidebook purchased before the trip does no good on the ground -- and can really add up.

While you can't plan for every potentially pricey travel snafu, you can keep expenses and surprises in check with these free apps.
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Motley Fool contributor Molly McCluskey writes regularly on travel and finance. Check out her previous columns, and follow her on Twitter at @MollyEMcCluskey.