Mobile phone applications are software programs developed for smartphones and tablets. The Google Play Store has over 1.3 million Android apps available for download totaling 40 billion downloads, while the Apple App Store has 650,000 apps and 30 billion downloads. Mobile apps are commonly used for small businesses, professional and personal communication, learning, travel, news, social media, and entertainment. Popular app categories include weather, social media, messaging, maps, transportation, music, internet, video, photography, and games.