# ChatTCP: PCAP Viewer & Analyzr — Supported protocols: TCP & UDP

> Network packet viewer and analyzer for TCP and UDP protocols. (iPhone/iPad app by Nanning Signalling Network Technology Co., Ltd.)

- Source: https://appshunter.io/ios/app/chattcp-pcap-viewer-and-analyzr/id6560112653 (this page in markdown: same URL + `.md`)
- Developer: [Nanning Signalling Network Technology Co., Ltd](https://appshunter.io/developer/1758343835)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 24 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2024-07-21
- Data updated: 2026-08-22
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/chattcp-pcap-viewer-and-analyzr/id6560112653/reviews.md

## What is ChatTCP?

ChatTCP makes viewing network packets as easy as reading chats!  
Supporting TCP & UDP.
Main Features:
- Viewing TCP/UDP packets is as easy as reading chat logs.
- The diagnostic analysis feature helps you pinpoint and identify issues.
- The Data Structure View helps you learn and master TCP/UDP and application layer protocols.
- Decoding of application layer protocols：HTTP、WebSocket、Redis、Mysql、DNS.
- It provides multiple pcap examples for beginners.
- Files transmitted via HTTP protocol can be exported.
User Documentation: https://docs.chattcp.com/

[Description of automatic subscription service]
1.Subscription service:
a) Pro+ Monthly (1 month)
b) Pro+ Yearly (12 months)
2.Payment: After the user confirms the purchase and makes payment, it will be credited to the iTunes account
3.Automatic renewal: Apple iTunes account will be charged within 24 hours before the expiration date, and the subscription period will be extended by one subscription period after the successful deduction
4.Close the service: You can close the service by going to "Settings" on your iPhone, entering "iTunes Store and App Store", clicking on "Apple ID", selecting "View Apple ID", entering the "Account Settings" page, clicking on "Subscriptions", and managing automatic subscription services. If you need to cancel, you can close it 24 hours before the end of each billing cycle, and no further charges will be deducted within 24 hours before the expiration date
5.Service Agreement: https://chattcp.com/terms-of-service
6.Privacy Agreement: https://chattcp.com/privacy-policy

## Key features

- View TCP/UDP packets like chat logs
- Diagnostic analysis for issue pinpointing
- Data Structure View for protocol mastery
- Decode application layer protocols (HTTP, WebSocket, etc.)
- Export HTTP transmitted files
- Includes pcap examples for beginners

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro+ | $39.99 | per year |
| Pro+ | $9.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro+ | $89.99 | one-time |
| Pro | $49.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/chattcp-pcap-viewer-and-analyzr/id6560112653/reviews.md

### 1/5 — 无法使用

*2026-05-13*

自定义协议能解析tcp数据，但是高级搜索协议选择custom就一条数据都搜索不到，无法使用，不订阅不给试用，订阅了发现不能用

**Developer response:** 您可以通过邮件向我们反馈，提供截图等信息。通过排查确认是bug的话我们会尽快修复的。因为测试也无法覆盖所有用户的真实使用场景。

### 5/5 — Great App

*2026-03-30*

For those who need to analyze network protocol packages, this app is well worth a try. Sometimes, it can immediately locate the corresponding problem.

## Frequently asked questions about ChatTCP

### What is ChatTCP?

ChatTCP is a utility app designed to make viewing and analyzing network packets, specifically TCP and UDP, as simple as reading chat messages. It offers features for diagnostic analysis and understanding protocol data structures.

### What protocols does ChatTCP support?

ChatTCP primarily supports the TCP and UDP protocols. It can also decode various application layer protocols such as HTTP, WebSocket, Redis, MySQL, and DNS.

### Can I export data from ChatTCP?

Yes, files transmitted via the HTTP protocol can be exported from ChatTCP. This feature is useful for further analysis or sharing of specific network traffic.

### Is ChatTCP suitable for beginners?

Yes, ChatTCP provides multiple pcap examples to assist beginners in learning and understanding network protocols. The interface is designed to be intuitive, similar to chat logs.

### What are the subscription options for ChatTCP?

ChatTCP offers a freemium model with optional Pro+ subscriptions. These include Pro+ Monthly for $9.99 and Pro+ Yearly for $39.99, providing enhanced features.

### How do I manage my ChatTCP subscription?

Subscriptions can be managed through your iPhone's 'Settings' under 'iTunes Store and App Store'. You can find and manage your subscriptions there, including cancellation options before the renewal date.

### Does ChatTCP have ads?

Based on the provided data, ChatTCP does not appear to contain advertisements. The monetization model is freemium, with optional paid subscriptions for advanced features.

### On which devices can I use ChatTCP?

ChatTCP is available for macOS and iPhone devices. It is designed to be accessible across different Apple platforms for network analysis needs.

## Version history (last 2 releases)

### 1.1 — 2026-06-15

Fix the TCP Keep-Alive identification logic error

### 1.0 — 2026-06-11

No release notes.

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All apps by Nanning Signalling Network Technology Co., Ltd: https://appshunter.io/developer/1758343835

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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 2026-08-22.*