GasBuddy is an old favorite and gives you the most up-to-date gas prices wherever you may be. Works in the U.S. or Canada. GasBuddy relies on users to update prices. This gives users a chance to win 100-dollars each day for adding prices. It also gives you a map so finding the lowest gas prices is easy. The app is free for all platforms.
Gas Guru gives you the lowest and closest gas prices. With Gas Guru, you can even search for the lowest fuel prices based on grades, even diesel. You can search using a list or you can view the app’s map to see your options. The app is free for Android and IOS and works with the Apple Watch.
Fuel Finder uses your smartphone’s location to show you the closest gas stations and how much you can expect to pay. It, too, includes a map to make finding stations a breeze. You can even find stations that have atms or car washes. The app is 1-99 for Android.