As of September 2015, WhatsApp charges its customers 99 cents per year after a free one-year trial period. WhatsApp charges this subscription fee so that customers do not have to deal with unsolicited advertisements. Customers can transfer subscriptions from one device or phone number to another device or phone number.
Founded in 2009 by two former Yahoo employees, WhatsApp offers its users the ability to communicate cross-platform by sending text messages, images and video through the Internet. WhatsApp is the most popular messaging service and has more than 900 million active users worldwide. In 2014, Facebook purchased WhatsApp for approximately $16 billion.