Comparison

SessionTalk Pro Softphone vs PortSIP ONE

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SessionTalk Pro Softphone

This mobile SIP client enables high-quality enterprise VoIP calls over LTE and WiFi. It offers features like video calls, SMS messaging, multiple account support, and advanced call management, all with minimal battery impact. It integrates seamlessly with cloud telephony solutions.

Highlights
  • SIP VoIP calls over LTE and WiFi
  • Video Calls
  • SMS Messaging
  • Multiple simultaneous accounts
  • Advanced call management (transfer, conference)
  • TLS Encryption and SRTP secure calls
  • Call Recording
Features
Read full description

Take your business calls and conversations wherever work takes you. SessionTalk Pro Softphone brings SIP calling, video, messaging and call-management tools together on iPhone and iPad. Connect your existing provider or office PBX and keep your work communications close, whether you are at your desk or on the move. Pro includes the Business features: incoming-call push notifications, video calls, messaging and XMPP, presence, multiple SIP accounts, call transfers, conference merging and call recording. No separate Business upgrade is required. CALL WITH CONFIDENCE • Make and receive SIP calls over Wi-Fi and mobile data. • Find people quickly with contacts, favourites and call history. • Use Bluetooth, speakerphone, mute, hold and voicemail notifications. • Enjoy clear audio with Opus, G.722 and G.711 support. MORE WAYS TO KEEP IN TOUCH • Share messages with XMPP chat and compatible SIP messaging services. • Keep conversations organised with contact avatars and group chat rooms. • Share images and files in supported messaging conversations. • Stay reachable with incoming-call push notifications and background XMPP message delivery. TOOLS FOR YOUR WORKDAY • Manage multiple SIP accounts in one app. • Transfer calls, bring people together in conferences and record calls. • Use video calling with a compatible provider. • Support for TLS and SRTP when enabled by your service. BRING YOUR OWN SERVICE SessionTalk is a softphone, not a phone service. A compatible SIP account or PBX is required for calling. XMPP messaging requires a compatible XMPP account. SIP messaging, video, push and other features depend on your provider and configuration. Provider calling charges and mobile data charges may apply. Need help? Contact support@sessiontalk.co.uk.

About

PortSIP ONE

Features
Read full description

PortSIP One is a client specifically designed for PortSIP PBX V22 or later versions, exclusively for iPhone. It leverages Wi-Fi or 4G/LTE connections, enabling users to make and receive calls as well as send instant messages. It supports push notifications, allowing users to receive calls and messages even if the app is force-closed. By accessing the iPhone's contact list, PortSIP One 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 conferencing with MCU (Multipoint Control Unit) support. PortSIP One prioritizes security and incorporates advanced settings for secure call signaling and audio encryption. The application supports high-definition video calls up to 1080P using H.264 and VP8 codecs, ensuring high-quality audio calls. Supported codecs include G.279, G.711a/u, Opus, AMR, AMR-WB, G.722.1, iLBC, GSM, and SPEEX-WB. PortSIP One supports group chats and allows the sending of voice, video, images, files, and more.

Screenshots

SessionTalk Pro Softphone3 screens
PortSIP ONE4 screens

Verdict

The call

The clearest difference is price: PortSIP ONE at Free against SessionTalk Pro Softphone's $6.99. PortSIP ONE also leads on in-app purchases (none vs 1). SessionTalk Pro Softphone's advantage is chart position (#88 vs unranked). On update cadence, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

PortSIP ONE is free to download; SessionTalk Pro Softphone costs $6.99 up front. SessionTalk Pro Softphone sells 1 one-off in-app purchase. PortSIP ONE asks for nothing beyond the download.

UpkeepUpdate frequency

SessionTalk Pro Softphone ships an update every 2 weeks, PortSIP ONE fortnightly. Both last shipped on October 14, 2026.

Scorecard3 real differences · 8 level
SessionTalk Pro Softphone versus PortSIP ONE: the parameters behind the verdict, then further details
ParameterSessionTalk Pro SoftphonePortSIP ONE
Price$6.99Free — better
Rating4.1 (30 ratings) — better—
Positive reviews62.6% of reviews—
Number of ratings30 — better—
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#88 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size63 MB146 MB
Age rating4+4+
DeveloperSessionTalk LtdPortSIP Solutions, Inc.

In-app purchases

1 purchases

SessionTalk Pro Softphone

One-time1
  • G.729 Annex A Codec$2.99
None

PortSIP ONE

No in-app purchases

Questions

Is SessionTalk Pro Softphone free?
SessionTalk Pro Softphone costs $6.99, and also offers in-app purchases.
Is PortSIP ONE free?
PortSIP ONE is free to download, with no in-app purchases.
Do SessionTalk Pro Softphone or PortSIP ONE have ads?
Neither SessionTalk Pro Softphone nor PortSIP ONE shows ads.
Which is updated more often, SessionTalk Pro Softphone or PortSIP ONE?
SessionTalk Pro Softphone ships an update every 2 weeks, and PortSIP ONE fortnightly. Most recently, SessionTalk Pro Softphone was updated on October 14, 2026 and PortSIP ONE on October 14, 2026.

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