TCP/UDP Server/Client vs OpenPort Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TCP/UDP Server/Client
This utility app allows you to set up a server or client for testing network connections. It supports multiple client connections and offers flexible response options for received data, with separate logs for events and hexadecimal values.
- TCP/UDP server and client functionality
- Supports multiple client connections
- Configurable port numbers (0-65535)
- Multiple response modes for received data
- Event and Hexadecimal log windows
- Echo, text, and lookup table responses
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TCP / UDP - Server / Client A simple Server - Client app which can be used for testing purposes. A server can be started which listens for incoming client connections. The server's IP address is the device's IP address. A port number between 0 and 65535 can be freely selected. The server is not limited by 'one' client connection, several clients can connect to the server. There are 2 Log windows where one is the event log and text sending/receiving and the other window shows the Hex values for sending and receiving. The server can respond to received data from a Client: - By sending received data back to the Client (echo) - Send an entered text back to the Client - By looking up a table you have defined and finding a match in this and then sending the associated data back to the Client The app is primarily developed for use on an iPad, but it can easily be used on an iPhone, although the screen is a bit small for this.
OpenPort Viewer
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OpenPort Viewer allows you to access your localhost from anywhere. Connect to your local development server remotely using OpenPort Host running on your Mac. Perfect for testing webhooks, APIs, and sharing work-in-progress with clients on the go. Commonly used to access Home Assistant (8123), n8n (5678), and OpenCode (4096)
Screenshots
Verdict
The clearest difference is update cadence: OpenPort Viewer at every 9 days against TCP/UDP Server/Client's every 5 months. On price, ads, in-app purchases and device support 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.
TCP/UDP Server/Client ships an update every 5 months, OpenPort Viewer every 9 days. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.
| Parameter | TCP/UDP Server/Client | OpenPort Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 12+ | 4+ |
| Developer | Jan Andersen | Chee Siang Tee |
In-app purchases
TCP/UDP Server/Client
No in-app purchases
OpenPort Viewer
No in-app purchases
Questions
Is TCP/UDP Server/Client free?
Is OpenPort Viewer free?
Do TCP/UDP Server/Client or OpenPort Viewer have ads?
Which is updated more often, TCP/UDP Server/Client or OpenPort Viewer?
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