Phone Number-based iPhone Apps

Sicher is a freeware instant messaging application for iOS, Android, and Windows Phone. Sicher allows users to exchange end-to-end encrypted text messages, media files and documents in both private and group chats. ...more

KakaoTalk (Korean: 카카오톡), or sometimes KaTalk, is a free mobile instant messaging application for smartphones with free text and free call features. ...more

MightyCall helps small businesses and entrepreneurs drive and grow their business, taking care of customer experience. ...more

WeChat is a social media with instant messaging, commerce and payment services application. ...more

Signal is the most scalable encryption tool. ...more

Telegram is a free cloud-based instant messaging platform. ...more