# SessionTalk SIP Softphone vs STN UC

The clearest difference is review sentiment: SessionTalk SIP Softphone at 39% against STN UC's 0%. SessionTalk SIP Softphone also leads on update cadence (every 5 days vs every 2 months). STN UC's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. SessionTalk SIP Softphone sells 2 one-off in-app purchases. STN UC asks for nothing beyond the download.

SessionTalk SIP Softphone ships an update every 5 days, STN UC every 2 months. The most recent releases landed on October 29, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SessionTalk SIP Softphone | STN UC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1K ratings)](https://appshunter.io/ios/app/sessiontalk-sip-softphone/id362501443/reviews)** | — |
| Number of ratings | **1K** | — |
| Positive reviews | **39.2% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 64 MB | 54 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SessionTalk Ltd](https://appshunter.io/developer/357429375) | [PortSIP Solutions, Inc.](https://appshunter.io/developer/426903821) |

## What reviewers say

### SessionTalk SIP Softphone

[App page](https://appshunter.io/ios/app/sessiontalk-sip-softphone/id362501443)

This mobile SIP client integrates with cloud VoIP solutions, offering advanced call management and high-quality communication. It supports various codecs, multiple accounts, and secure calling features, with some premium functionalities available through in-app purchases.

**Highlights:** SIP VoIP calls over LTE and WiFi, Incoming calls via Push Notifications, Video Calls with H264 & VP8 codec, Multiple accounts - simultaneously registered, Call Recording, TLS Encryption and SRTP secure calls, Conference - Merge and Split

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| G.729 Annex A Codec | $2.99 | one-time |
| Upgrade to Pro | $6.99 | one-time |

**What reviewers like**

- 🚀 Works well
- 👍 Easy to set up
- 🔒 Secure
- 🔋 Doesn't drain battery
- 👍 Good call quality

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Doesn't work with some providers
- 🐛 Push notifications not working
- 🐛 Doesn't work in background
- 🐛 Incompatible with newer iOS versions

**Reported bugs**

- Incoming calls not working
- Calls dropping
- Connectivity issues
- Keypad not working properly

**Requested features**

- Scheduled DND mode
- Improved iPad support
- Video calling
- More codec support


### STN UC

[App page](https://appshunter.io/ios/app/stn-uc/id1569753155)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SessionTalk SIP Softphone free?

SessionTalk SIP Softphone is free to download, with in-app purchases available.

### Is STN UC free?

STN UC is free to download, with no in-app purchases.

### Do SessionTalk SIP Softphone or STN UC have ads?

Neither SessionTalk SIP Softphone nor STN UC shows ads.

### Which is updated more often, SessionTalk SIP Softphone or STN UC?

SessionTalk SIP Softphone ships an update every 5 days, and STN UC every 2 months. Most recently, SessionTalk SIP Softphone was updated on October 29, 2026 and STN UC on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*