# PortSIP UC vs A Event 4U

The clearest difference is device support: PortSIP UC at 3 against A Event 4U's 1. PortSIP UC also leads on iOS requirement (12.0 vs 17.0). 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.

PortSIP UC ships an update fortnightly, A Event 4U every 10 days. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PortSIP UC | A Event 4U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (93 ratings)](https://appshunter.io/ios/app/portsip-uc/id426903818/reviews)** | — |
| Number of ratings | **93** | — |
| Positive reviews | 30.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Free | — |
| Size | 52 MB | 30 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PortSIP Solutions, Inc.](https://appshunter.io/developer/426903821) | [AiMLText](https://appshunter.io/developer/1833831369) |

## What reviewers say

### PortSIP UC

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

This SIP-based softphone allows users to make and receive calls and instant messages over Wi-Fi or cellular data. It integrates with a PBX for push notifications and offers advanced call management features, including video conferencing. Security is a priority with encrypted signaling and audio.

**Highlights:** SIP-based calling and messaging, Push notifications with PBX integration, Contact list integration, Multi-call management, Video conferencing, Secure call signaling and audio encryption, HD video calls up to 1080P

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

**In-app purchases:** none


### A Event 4U

[App page](https://appshunter.io/ios/app/a-event-4u/id6779598621)

**In-app purchases:** none


## Frequently asked questions

### Is PortSIP UC free?

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

### Is A Event 4U free?

A Event 4U is free to download, with no in-app purchases.

### Do PortSIP UC or A Event 4U have ads?

Neither PortSIP UC nor A Event 4U shows ads.

### Which is updated more often, PortSIP UC or A Event 4U?

PortSIP UC ships an update fortnightly, and A Event 4U every 10 days. Most recently, PortSIP UC was updated on October 20, 2026 and A Event 4U on October 11, 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.*