Productivity
Groundwire: VoIP SIP Softphone
Groundwire is a SIP calling client for a compatible PBX or VoIP provider, with business-style call handling.
Pick it when an existing SIP service needs a mobile extension
Transfers, conference calls and per-account settings can preserve a work-line workflow on a phone.
Keep in mind: It supplies no VoIP service or guaranteed network handoff; encryption options depend on the actual provider and call path.
Inside the app
Official product images
What you can do
- SIP audio and video calling
- Conference and attended or unattended transfers
- Multiple accounts messaging and voicemail notifications
Good for
- Users with compatible SIP credentials and provider support
Consider alternatives for
- People expecting an included number or automatic emergency-call reliability
Limitations & considerations
- Captured minimum: iOS 16.0.
- It supplies no VoIP service or guaranteed network handoff; encryption options depend on the actual provider and call path.
Privacy & permissions
Credentials, contacts and push services need careful handling; supported TLS, SRTP or ZRTP is not proof that every conversation uses every protection.
Sources & review notes Updated Nov 11, 2026
Reviewed by iApp4Me Editorial Team. Recommendations use the linked documentation and attributed accounts; device observations are identified separately.
- US App Store developer description
Complete description, download price and compatibility metadata captured 2026-11-02.
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