Facebook Messenger
Facebook now has a separate app simply for messaging capabilities. By the end of 2014, Facebook Messenger had more than 500 million users, making it the top iPhone app for 2014.
More often than not, people are always on the go and away from home. For this reason, apps have become more and more popular in recent years. The ability to communicate, chat, and keep in touch with friends and family nearly anywhere allows you to stay in touch, no matter where you are or what you are doing. Whether or not you have these apps, they were widely downloaded in 2014. These, and several other iPhone apps are downloaded on a daily basis, making them some of the most popular apps, which are used among iPhone owners over the past few years.