HaloChat, Anywhere, Anytime, AnySignal. HaloChat is a fast growing messenger app to keep you in touch with the world. HaloChat calls, video calls and chats are FREE, clean and uninterrupted thanks to our revolutionary technologies that use less bandwidth. Low Cost Usage - Atom cares about your wallet. The “Low Data Usage” tab on the app can be toggled when to save precious data when making phone calls on slow or expensive network connections. Make high quality calls for up to 7 minutes using