There are many categories of apps including games, lifestyle, entertainment, news, social, and educational apps. Games are often the most popular based on app store rankings, with many taking advantage of touch screens. Entertainment apps provide short bursts of entertainment through novelty features like voice changing. Social apps allow people to connect and interact over the internet, with popular examples being Facebook and Twitter apps. Lifestyle apps offer useful day-to-day services such as guides for activities, shopping, and relaxation tools. The other stated categories contain apps related to their subject area.