# TCP/UDP Server/Client vs Quillink

The clearest difference is in-app purchases: TCP/UDP Server/Client at none against Quillink's 1. Quillink's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Quillink sells 1 one-off in-app purchase. TCP/UDP Server/Client asks for nothing beyond the download.

TCP/UDP Server/Client ships an update every 5 months, Quillink every 6 months. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | TCP/UDP Server/Client | Quillink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tcpudp-serverclient/id6473011693/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Free | — |
| Size | 1 MB | 68 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Jan Andersen](https://appshunter.io/developer/460814123) | [ZhuniYunji Technology Co., Ltd](https://appshunter.io/developer/1788642938) |

## What reviewers say

### TCP/UDP Server/Client

[App page](https://appshunter.io/ios/app/tcpudp-serverclient/id6473011693)

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.

**Highlights:** 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

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

**In-app purchases:** none


### Quillink

[App page](https://appshunter.io/ios/app/quillink/id6740160285)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quillink VIP | $39.99 | one-time |


## Frequently asked questions

### Is TCP/UDP Server/Client free?

TCP/UDP Server/Client is free to download, with no in-app purchases.

### Is Quillink free?

Quillink is free to download, with in-app purchases available.

### Do TCP/UDP Server/Client or Quillink have ads?

Neither TCP/UDP Server/Client nor Quillink shows ads.

### Which is updated more often, TCP/UDP Server/Client or Quillink?

TCP/UDP Server/Client ships an update every 5 months, and Quillink every 6 months. Most recently, TCP/UDP Server/Client was updated on November 4, 2026 and Quillink on November 8, 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.*