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Best Sip Client Apps

243+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated September 2026

Out of 243+ sip client apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Sip Client Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Zoiper Lite voip soft phoneZoiper Lite voip soft phoneFree4.4★ (1.7K)NoYesSep 2026
2PortSIP UCPortSIP UCFree4.1★ (93)NoNoSep 2026
3Smart-SIP-PhoneSmart-SIP-PhoneFree5.0★ (1)NoNoAug 2026
4LinphoneLinphoneFree2.4★ (9)NoNoSep 2026
5SessionTalk SIP SoftphoneSessionTalk SIP SoftphoneFree4.4★ (1K)NoYesSep 2026
6Bria Mobile: VoIP SoftphoneBria Mobile: VoIP SoftphoneFree4.4★ (2.6K)NoYesSep 2026
7Airways.Sale — Airline ticketsAirways.Sale — Airline ticketsFree4.8★ (63)NoNoSep 2026
8VaxPhone - SIP based softphoneVaxPhone - SIP based softphoneFree5.0★ (1)NoNoMay 2026

Top Picks for Sip Client

Zoiper Lite voip soft phone#1

Zoiper Lite voip soft phone by Securax Ltd.

Call with any PBX or Provider
Editor's Choice
📊 Productivity
4.4😐(1.7K ratings)
FreeIn-App Purchases
Zoiper Lite voip soft phone screenshot 1
Zoiper Lite voip soft phone screenshot 2
Zoiper Lite voip soft phone screenshot 3
Zoiper Lite voip soft phone screenshot 4

This app allows you to make high-quality voice and video calls over Wi-Fi or 3G using your PBX or VoIP provider. It offers features like call waiting, transfer, and recording, with background operation optimized for battery life. Easily configure accounts with a built-in QR code scanner.

What We Love

  • 🚀 Easy to set up and use
  • 📞 Good call quality
  • 🌐 Works well with various VoIP providers
  • 💻 Useful for remote work
  • 🤝 Good for business communication

Room to Improve

  • 🐛 Frequent disconnections and registration issues
  • 🔇 Poor audio quality and volume
  • 🔋 High battery consumption
  • 📱 Compatibility issues with newer iOS devices
  • 🔒 Unreliable push notifications and background functionality
PortSIP UC#2

PortSIP UC by PortSIP Solutions, Inc.

SIP Softphone,Voice,Video,IM
Strong Contender
🌐 Social Networking
4.1(93 ratings)
Free
PortSIP UC screenshot 1
PortSIP UC screenshot 2
PortSIP UC screenshot 3
PortSIP UC screenshot 4
PortSIP UC screenshot 5
PortSIP UC screenshot 6

This SIP-based softphone allows users to make and receive calls and instant messages over Wi-Fi or cellular data. It integrates with a PBX for push notifications and offers advanced call management features, including video conferencing. Security is a priority with encrypted signaling and audio.

More Sip Client apps to explore

FAQ about Sip Client

What are the best sip client apps for iPhone?
Zoiper Lite voip soft phone tops our sip client apps ranking as of September 2026, with a 4.4-star average from 1.7K App Store ratings, and it's free to download.
Yes — 18 of the top sip client apps we rank are free to download, including Zoiper Lite voip soft phone and PortSIP UC.
Zoiper Lite voip soft phone has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 243+ sip client apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Zoiper Lite is a SIP softphone that enables you to make crystal clear, echo-free voice and video calls over wireless and 3G networks. It connects to your existing PBX or VoIP provider, offering features like call waiting, transfer, and recording.
Key features include high-quality voice and video calls, seamless integration with PBX and VoIP providers, efficient background operation for battery saving, and a built-in QR code scanner for easy account setup. It also supports call waiting, transfer, statistics, instant messaging, and presence.

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