exVoipAPP is a SIP-based softphone application designed for iPhone. It uses Wi-Fi or 4G/LTE connections to enable users to make and receive calls and instant messages.

When integrated with exVoip PBX, exVoipAPP supports push notifications, allowing users to receive calls and messages even when the application is force terminated.
With access to the iPhone's contact list, exVoipAPP offers a user-friendly interface for efficient communication management. It supports multiple calls, enabling users to switch between calls, merge and split calls, and perform attended and unattended transfers. Additionally, it supports video conferences.

The application supports high-definition video calls up to 1080P with H.264 and VP8 codecs and ensures high-quality audio calls. The supported codecs include G.279, G.711a, G.722.1.