Comparison

SessionTalk Pro Softphone vs STN UC

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

SessionTalk Softphone is a feature rich mobile SIP client for your Cloud VoIP Telephony solution. With a superbly designed and intuitive user interface, the softphone offers easy set up with lots of preconfigured VoIP providers built in and smart call management features. Enjoy high quality enterprise communication features with zero effect on battery life. Please note some mobile network operators prohibit or restrict the use of VoIP over their networks and may impose additional fees or other charges. Please check with your operator before making calls over LTE networks. SessionTalk Softphone features: - Supports making SIP VoIP calls over LTE and WiFi - Incoming Calls via Push Notifications - Video Calls with H264 &VP8 codec - SMS Messaging ( SIP SIMPLE support required ) - Multiple accounts - simultaneously registered. Receive calls on any registered account. - Set call background image to contact photo or custom image - Dial Plan - Dual Line - Swap between 2 active calls - Conference - Merge and Split - Attended and Unattended Transfer - TLS Encryption with optional certificate verification - SRTP secure calls - Bluetooth Support - Call Recording - Quick import of accounts from major VoIP providers - Excellent audio quality - Opus, G722, G711 ,GSM and iLBC codec support - G729 Annex A available as Premium Feature - Speakerphone, Mute and Hold - DTMF Support , RFC2833 and Inband - Ringtones - Contacts integration, add or edit contacts from within the app - Dial from Call History and Favorites - Voicemail Notifications If you need technical support please email support@sessiontalk.co.uk

About

STN UC

This application functions as a SIP-based softphone, enabling users to make and receive calls and instant messages over Wi-Fi or cellular data. It integrates with a specific PBX system to support push notifications for incoming calls and messages, even when the app is not actively running.

Highlights
  • SIP-based softphone
  • Wi-Fi or 4G/LTE calls
  • Instant messaging
  • Push notifications for calls
  • Push notifications for messages
  • Interworks with PortSIP PBX
Features
Read full description

STN-UC is a SIP-based softphone for iPhone that uses Wi-Fi or 4G/LTE connection to make and receive calls and Instant Messages. Interworking with PortSIP PBX, STN-UC support push notification, which allows it receive calls and messages even it was force terminated.

Screenshots

SessionTalk Pro Softphone4 screens
STN UC3 screens

Verdict

The call

The clearest difference is review sentiment: SessionTalk Pro Softphone at 63% against STN UC's 0%. SessionTalk Pro Softphone also leads on chart position (#79 vs unranked). STN UC's advantage is price (Free vs $6.99) and in-app purchases (none vs 1). On update cadence, ads and device support 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

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

UpkeepUpdate frequency

SessionTalk Pro Softphone ships an update every 5 weeks, STN UC every 2 months. The most recent releases landed on September 21, 2026 and August 20, 2026 respectively.

Scorecard6 real differences · 5 level
SessionTalk Pro Softphone versus STN UC: the parameters behind the verdict, then further details
ParameterSessionTalk Pro SoftphoneSTN UC
Price$6.99Free — better
Rating4.1 (28 ratings) — better—
Positive reviews63.0% of reviews — better0.0% of reviews
Number of ratings28 — better—
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#79 — better—
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.011.0 — better
Further details — not scored
Size20 MB54 MB
Age rating4+4+
DeveloperSessionTalk LtdPortSIP Solutions, Inc.

Customer experience

SessionTalk Pro Softphone

All ratings28 ratings
Positive75.0%
Neutral7.1%
Negative17.9%
Written reviews154 reviews
Positive63.0%
Neutral10.4%
Negative26.6%

STN UC

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

SessionTalk Pro Softphone

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

STN UC

No in-app purchases

Questions

Is SessionTalk Pro Softphone free?
SessionTalk Pro Softphone costs $6.99, and also offers in-app purchases.
Is STN UC free?
STN UC is free to download, with no in-app purchases.
Do SessionTalk Pro Softphone or STN UC have ads?
Neither SessionTalk Pro Softphone nor STN UC shows ads.
Which is updated more often, SessionTalk Pro Softphone or STN UC?
SessionTalk Pro Softphone ships an update every 5 weeks, and STN UC every 2 months. Most recently, SessionTalk Pro Softphone was updated on September 21, 2026 and STN UC on August 20, 2026.

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