14. Gas Buddy

Gas prices can be a nightmare. With Gas Buddy, you can find the best deals in your area based on user-provided data.

Gas Buddy also rewards you for reporting local deals. You can win sweepstakes like daily $100 giveaways, and compete for prizes with other users. Researchers with Time magazine recently tested the app and found “average differentials of 41 cents per gallon at five metropolitan areas”

GasBuddy

15. Best Parking

This app helps you find the cheapest parking options in more than 105 cities and 115 airports across North America. It also provides details such as hours of operation and phone numbers for local lots and garages.

Best Parking says it provides “the most accurate data of any parking application.” And it’s willing to back up that claim with a $5 Starbucks gift card for reporting inaccurate information.

The app has been featured on the Travel Channel as a “life saver.”