Furthermore, it is a freeware application with a light size (approximately 6 Megabytes) that requires iOS 4.0 or newer. Interface The design of the Facebook Messenger app is similar to the desktop version. The theme is based on the blue and grey hues proprietary to the website and switching between the contacts and the conversation is a seamless process. Furthermore, this iPhone application permits you to receive notifications and status updates from your contacts as well as conduct group conversation, pinpoint your location on the map and find out where your friends are. Pros First of all, this iOS app is an excellent way to speed up texting and get in touch with your friend using only a wireless/data plan. Free of charge and constantly receiving updates, the iOS variant of Facebook Messenger does not require connecting to the Facebook domain, which means that you can bypass the bans and firewalls without breaking a sweat.