# Linphone vs STN UC

The clearest difference is review sentiment: Linphone at 35% against STN UC's 0%. STN UC's advantage is iOS requirement (11.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 22, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | Linphone | STN UC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (9 ratings)](https://appshunter.io/ios/app/linphone/id360065638/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | **35.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 70 MB | 54 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Belledonne Communications SARL](https://appshunter.io/developer/694969034) | [PortSIP Solutions, Inc.](https://appshunter.io/developer/426903821) |

## What reviewers say

### Linphone

[App page](https://appshunter.io/ios/app/linphone/id360065638)

This open-source application provides free audio and video calls, as well as text messaging, over the internet. It allows users to stay reachable at all times via WiFi or mobile data, even when the app is closed. Enjoy secure communication and the ability to connect with traditional phone lines.

**Highlights:** High definition audio and video calls, Audio conference calls, Picture and file sharing, Push notifications for reachability, Secure communication with encryption, SIP-compliant VoIP service integration

**Features:** Siri integration, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Good call quality
- 🚀 Works well with SIP providers
- 💡 Useful features like DTMF support

**What reviewers complain about**

- 🐛 Buggy, crashes frequently
- 🔑 Issues with account setup and configuration
- 🔒 Security concerns with password handling
- 🔋 Unreliable background/push notification support

**Reported bugs**

- Crashes on startup
- Incoming calls not working properly
- Settings not saving correctly
- Compatibility issues with newer iOS versions

**Requested features**

- Add support for multiple SIP accounts
- Improve user interface and navigation
- Provide more customization options
- Enhance audio quality and noise cancellation


### 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 Linphone free?

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

### Is STN UC free?

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

### Do Linphone or STN UC have ads?

Neither Linphone nor STN UC shows ads.

### Which is updated more often, Linphone or STN UC?

Linphone ships an update every 2 months, and STN UC every 2 months. Most recently, Linphone was updated on September 22, 2026 and STN UC on August 20, 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.*