# TCP/UDP Server/Client

> Network testing utility for creating TCP/UDP servers and clients. (iPhone/iPad app by Jan Andersen.)

- Source: https://appshunter.io/ios/app/tcpudp-serverclient/id6473011693 (this page in markdown: same URL + `.md`)
- Developer: [Jan Andersen](https://appshunter.io/developer/460814123)
- Category: Utilities, Developer Tools
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 12+
- Requires: iOS 15.0 · 1 MB
- Languages: English
- Released: 2023-11-25
- Data updated: 2026-07-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/tcpudp-serverclient/id6473011693/reviews.md

## What is TCP/UDP Server/Client?

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.

## Key features

- 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


## Frequently asked questions about TCP/UDP Server/Client

### What is TCP/UDP Server/Client used for?

TCP/UDP Server/Client is a utility app designed for testing network connections. It allows users to set up either a server to listen for incoming connections or a client to initiate connections, facilitating network diagnostics and development.

### Can TCP/UDP Server/Client handle multiple connections?

Yes, the server functionality in TCP/UDP Server/Client is not limited to a single connection. It can accommodate several clients connecting simultaneously, making it suitable for testing scenarios with multiple endpoints.

### What kind of responses can the server provide?

The server in TCP/UDP Server/Client can respond to received data in several ways: by echoing the data back, sending pre-defined text, or looking up a match in a user-defined table and sending the associated data.

### Does TCP/UDP Server/Client have ads?

No, TCP/UDP Server/Client does not contain advertisements. The app is completely free to use without any ad interruptions.

### What devices is TCP/UDP Server/Client compatible with?

TCP/UDP Server/Client is primarily developed for iPad but is also compatible with iPhone and iPod. It is designed to run on iOS devices.

### What is the age rating for TCP/UDP Server/Client?

TCP/UDP Server/Client has an age rating of 12+. This indicates it is suitable for users aged 12 and older.

### How often is TCP/UDP Server/Client updated?

The latest version of TCP/UDP Server/Client is 1.3, last updated on December 13, 2025. While specific update frequency isn't detailed, the recent update suggests ongoing support.

### What are the log features in TCP/UDP Server/Client?

TCP/UDP Server/Client includes two log windows. One tracks events and text sending/receiving, while the other displays the hexadecimal values for data transmission and reception.

## Version history (last 5 releases)

### 1.4 — 2026-07-02

Responses can now be sent from the server to the client in server UDP mode.

### 1.3 — 2025-12-13

Updated Age Ratings

### 1.2 — 2025-10-01

Small adjustments

### 1.1 — 2024-04-11

Bug fixes

### 1.0 — 2023-11-25

No release notes.

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## More apps by Jan Andersen

- [Ørkenvandringen](https://appshunter.io/ios/app/rkenvandringen/id460814120)

All apps by Jan Andersen: https://appshunter.io/developer/460814123

## Related topics

[udp tcp](https://appshunter.io/ios/topics/udp-tcp)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-06.*