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Level Up On All Your Devices

Summer may be the season for getting outdoors, but that certainly doesn't mean you're leaving your devices behind. Load 'em up with these apps that are on sale for 4th of July and make the most of your sunny days and warm nights. From Rosetta Stone language learning to Twitter automation plans to access to some of the best flight deals around, there's an app for whatever you're into this year—and plenty of lifetime subscription deals. Don't miss the apps and software you didn't know you needed.