TCP/UDP Server/Client vs Zync
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.
Zync
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Zync: The Ultimate Remote Management Tool for Developers and Sysadmins. Take your terminal with you. Zync is a premium SSH and SFTP client designed for those who need reliable, secure, and beautiful access to their servers on the go. Whether you're fixing a critical bug from a cafe or monitoring logs during your commute, Zync provides a desktop-class terminal experience in the palm of your hand. KEY FEATURES: Full Xterm.js Terminal Emulation Experience a high-performance, accurate terminal. Zync supports full ANSI colors, interactive programs (Vim, Htop, Tmux), and window resizing that actually works. Security You Can Trust Your credentials stay yours. Zync uses iOS Keychain and industry-standard encrypted storage to keep your passwords and private keys safe. Supports Password and SSH Key-based authentication. Integrated SFTP Support Not just a terminal. Browse your server's file system, download logs, or upload quick fixes directly from your mobile device. Custom Terminal Keyboard Stop fighting with the default iOS keyboard. Our built-in toolbar gives you instant access to Ctrl, Alt, Tab, Esc, and Arrow keys, making command-line navigation effortless. Organized Host Management Save and organize your frequently used servers. Connect in a single tap with our streamlined connection manager. Premium Modern UI Tools for developers don't have to be ugly. Zync features a sleek, minimalist design that feels right at home on your device, with full support for Dark and Light modes. WHY USE ZYNC? Built for Speed: Optimized React Native architecture for near-instant connections. Lightweight: No bloat, just the tools you need to get the job done. Reliable: Built to handle unstable mobile networks with graceful reconnection. Perfect for: DevOps Engineers, System Administrators, Web Developers, and anyone who needs to "zync" up with their infrastructure.
Screenshots
Verdict
TCP/UDP Server/Client and Zync are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | TCP/UDP Server/Client | Zync |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 25 MB |
| Age rating | 12+ | 4+ |
| Developer | Jan Andersen | Bytequests Software Private Limited |
In-app purchases
TCP/UDP Server/Client
No in-app purchases
Zync
No in-app purchases









