# PortSIP UC vs Core4VoIP Mobile Dialer

The clearest difference is rating: Core4VoIP Mobile Dialer at 5.0 against PortSIP UC's 4.1. Core4VoIP Mobile Dialer also leads on iOS requirement (8.0 vs 15.0). PortSIP UC's advantage is ratings volume (93 vs 1). 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.

Core4VoIP Mobile Dialer holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: PortSIP UC has 93 ratings behind it against 1, so its average is the more settled of the two.

PortSIP UC ships an update every 2 weeks, Core4VoIP Mobile Dialer monthly. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | PortSIP UC | Core4VoIP Mobile Dialer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (93 ratings)](https://appshunter.io/ios/app/portsip-uc/id426903818/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/core4voip-mobile-dialer/id757713630/reviews)** |
| Number of ratings | **93** | 1 |
| Positive reviews | 31.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 41 MB | 3 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [PortSIP Solutions, Inc.](https://appshunter.io/developer/426903821) | [Divine IT Limited](https://appshunter.io/developer/757713633) |

## What reviewers say

### PortSIP UC

[App page](https://appshunter.io/ios/app/portsip-uc/id426903818)

This SIP-based softphone app enables voice and video calls, along with instant messaging, using Wi-Fi or cellular data. It integrates with a PBX system for push notifications and offers advanced call management features. Security and high-definition media are prioritized.

**Highlights:** SIP-based softphone, Voice and video calls, Instant messaging, Push notifications, Contact list integration, Multi-call management, Video conferencing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Core4VoIP Mobile Dialer

[App page](https://appshunter.io/ios/app/core4voip-mobile-dialer/id757713630)

This SIP dialer for iPhone is optimized for low bandwidth environments. It transmits voice data as IP packets over the internet, ensuring functionality even in areas with limited connectivity. Compatible with iOS 5 and above.

**Highlights:** SIP dialer functionality, Optimized for low bandwidth, IP packet voice transmission, iOS 5+ compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PortSIP UC free?

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

### Is Core4VoIP Mobile Dialer free?

Core4VoIP Mobile Dialer is free to download, with no in-app purchases.

### Which has better reviews, PortSIP UC or Core4VoIP Mobile Dialer?

Core4VoIP Mobile Dialer is rated higher. PortSIP UC averages 4.1 out of 5 from 93 ratings, while Core4VoIP Mobile Dialer averages 5.0 from 1 ratings.

### Do PortSIP UC or Core4VoIP Mobile Dialer have ads?

Neither PortSIP UC nor Core4VoIP Mobile Dialer shows ads.

### Which is updated more often, PortSIP UC or Core4VoIP Mobile Dialer?

PortSIP UC ships an update every 2 weeks, and Core4VoIP Mobile Dialer monthly. Most recently, PortSIP UC was updated on November 6, 2026 and Core4VoIP Mobile Dialer on November 1, 2026.

---

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