PortSIP UC vs A Event 4U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PortSIP UC
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.
- 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
Read full descriptionHide full description
PortSIP Softphone is a SIP-based softphone application designed for iPhone. It utilizes Wi-Fi or 4G/LTE connections to enable users to make and receive calls and instant messages. When integrated with PortSIP PBX, PortSIP Softphone supports push notifications, allowing users to receive calls and messages even when the application is force terminated. With access to the iPhone's contact list, PortSIP Softphone offers a user-friendly interface for efficient communication management. It supports multiple calls, enabling users to switch between calls, merge and split calls, and perform attended and unattended transfers. Additionally, it supports video conferences with MCU (Multipoint Control Unit) support. PortSIP Softphone prioritizes security and incorporates advanced settings for secure call signaling and audio encryption. The application supports high-definition video calls up to 1080P with H.264 and VP8 codecs and ensures high-quality audio calls. The supported codecs include G.279, G.711a/u, Opus, AMR, AMR-WB, G.722.1, iLBC, GSM, and SPEEX-WB.
A Event 4U
Read full descriptionHide full description
A Event 4U helps you create polished event invitations, send guest links, and manage plans from your iPhone. Build an invite in minutes with ready-made flyer designs, event details, guest lists, RSVP tracking, time polls, sign-up lists, reminders, and optional event chat. Hosts can send invitations by text or email, monitor guest responses, and keep every update tied to the event instead of scattered across message threads. Guests can open their invite link, view event details, RSVP, vote on time options, claim sign-up items, and join event chat when enabled by the host. Subscriptions are governed by Apple’s standard Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aevent4u.com/privacy A Event 4U is built for birthdays, parties, dinners, team events, celebrations, and everyday plans that need a clear guest list and simple coordination.
Screenshots
Verdict
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.
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.
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.
| Parameter | PortSIP UC | A Event 4U |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (93 ratings) — better | — |
| Positive reviews | 30.0% of reviews | — |
| Number of ratings | 93 — better | — |
| Update frequency | Fortnightly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 52 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | PortSIP Solutions, Inc. | AiMLText |
In-app purchases
PortSIP UC
No in-app purchases
A Event 4U
No in-app purchases









