PulseSIP turns your iPhone into a full-featured SIP desk phone — no dedicated hardware required. Connect to any standard SIP server, Asterisk PBX, or hosted VoIP provider and start making calls in minutes.
FEATURES:
Reliable Calling
• Register with any SIP server using standard credentials
• Make outgoing calls by typing a number or full SIP URI
• Full-screen incoming call screen with Answer and Decline
• Auto-registers on launch so you're always reachable
Professional In-Call Controls
• Mute microphone with a single tap
• Hold and resume calls using SIP re-INVITE
• In-call DTMF keypad for navigating IVR menus and phone trees
• Real-time call duration timer
Maximum DTMF Compatibility
PulseSIP sends DTMF tones three ways simultaneously — RFC 2833 (out-of-band
RTP), SIP INFO, and inband audio — ensuring reliable digit delivery regardless
of your server's DTMF mode setting.
Call History
• Recents list with incoming, outgoing, missed, and declined calls
• Tap any entry to call back instantly
• Swipe to delete individual entries or clear all history
NAT & Network Traversal
• Built-in STUN support
• ICE (Interactive Connectivity Establishment) for complex NAT scenarios
• DNS SRV lookup for enterprise SIP deployments
Native & Lightweight
• Built entirely in SwiftUI with a clean, familiar iOS interface
• No CallKit — works without special entitlements or carrier agreements
• Credentials secured in the iOS Keychain
• No subscriptions, no accounts, no tracking
WHO IS IT FOR?
PulseSIP is designed for developers, IT administrators, and power users who
need a straightforward SIP client to test and use VoIP infrastructure —
whether that's an Asterisk server, FreePBX, Kamailio, or any other
standards-compliant SIP registrar.
REQUIREMENTS
• An active SIP account with a registrar server
• iOS 18 or later
• Wi-Fi or cellular data connection
