Linphone vs STN UC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Linphone
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.
- 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
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Linphone is an open source internet SIP phone or Voice Over IP phone (VoIP). Linphone is an open source app offering free audio/video calls and text messaging. With Linphone, you can be reachable at any time, even if the app is closed, with a WiFi or 3G/4G internet connection. Linphone key features: * high definition audio and video calls * audio conference calls with various participants * pictures and file sharing * Linphone accounts reachable at any time, even if the app is closed (thanks to push notifications) * secure communication (encryption options) * compliant with a large number of SIP-compatible VoIP service providers allowing to reach everyone that has a "classic" phone line. Linphone is available on the main mobile and desktop operating systems and offers various specific features for advanced users (codecs, transport standard, encryption options, DTMF...). For more information, see Linphone project website: www.linphone.org Note for developers and professionals: Linphone can be rebranded and customized to meet specific needs. Contact Belledonne Communications www.belledonne-communications.com for any specific development query.
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.
- SIP-based softphone
- Wi-Fi or 4G/LTE calls
- Instant messaging
- Push notifications for calls
- Push notifications for messages
- Interworks with PortSIP PBX
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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
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Linphone | STN UC |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (9 ratings) — better | — |
| Positive reviews | 35.2% of reviews — better | 0.0% of reviews |
| Number of ratings | 9 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 70 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Belledonne Communications SARL | PortSIP Solutions, Inc. |
Customer experience
Linphone
STN UC
Bugs and requests
Linphone
Reported bugs
4 issues- Crashes on startup
- Incoming calls not working properly
- Settings not saving correctly
- Compatibility issues with newer iOS versions
Requested features
4 requests- Add support for multiple SIP accounts
- Improve user interface and navigation
- Provide more customization options
- Enhance audio quality and noise cancellation
STN UC
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Linphone
No in-app purchases
STN UC
No in-app purchases
