# MQTTCP — SUPPORT MQTT, TCP AND UDP! > Utility app for MQTT, TCP, and UDP communication and server management. (iPhone/iPad app by xiao zhang.) - Source: https://appshunter.io/ios/app/mqttcp/id6743165443 (this page in markdown: same URL + `.md`) - Developer: [xiao zhang](https://appshunter.io/developer/1086950190) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 18.2 · 4 MB - Languages: English, Chinese - Released: 2025-03-17 - Data updated: 2026-06-11 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/mqttcp/id6743165443/reviews.md ## What is MQTTCP? [Main Features] 1. MQTT * Clean and intuitive user interface * Supports publishing and subscribing to messages, suitable for communication between IoT devices. * Username/password authentication support * Automatic reconnection capability * Real-time subscription status display * Message publication history record * Supports viewing topic information in JSON tree format. 2. TCP CLIENT * Clean and intuitive user interface * Based on Apple's native Network framework, providing stable performance * Connect to any TCP server via IP address and port * Support for both text and hexadecimal data transmission modes * Message history tracking with timestamp markers * Hexadecimal data visualization with graphical interface 3. TCP SERVER * Clean and intuitive user interface * Based on Apple's native Network framework, providing stable performance * One-click start and stop operation * Real-time display of data from all connected clients * Ability to manage multiple client connections simultaneously * Support for both text and hexadecimal data transmission formats 4. UDP * Clean and intuitive user interface * Based on Apple's native Network framework, providing stable performance * One-click start and stop listening * Highly configurable, capable of adapting to various application scenarios * Supports automatic resource cleanup after disconnection * Efficient memory management, preventing data leaks ------------------------------ Welcome to MQTTCP! This application aims to provide a convenient way to interact with MQTT、TCP、UDP services. By downloading and using this application, you agree to comply with the End User License Agreement (EULA): Apple Standard EULA(https://www.apple.com/legal/internet-services/itunes/dev/stdeula/). Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscriptions and auto-renewal in your account settings. ## Key features - MQTT publish/subscribe - TCP client/server functionality - UDP listener - Username/password authentication - Message history tracking - Hexadecimal data visualization ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Annual | $1.99 | per year | | Monthly | $0.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | One-time Purchase | $2.99 | one-time | ## Frequently asked questions about MQTTCP ### What is MQTTCP? MQTTCP is a utility application designed to help users interact with MQTT, TCP, and UDP network services. It provides functionalities for publishing and subscribing to messages, acting as a TCP client or server, and listening for UDP data. ### Does MQTTCP have ads? No, MQTTCP does not contain advertisements. The application is free to download and use, with optional subscription plans for enhanced features. ### What are the subscription options for MQTTCP? MQTTCP offers a monthly subscription for $0.99 and an annual subscription for $1.99. Both plans include a 3-day free trial period. ### How can I manage my MQTTCP subscription? You can manage your subscriptions and turn off auto-renewal at least 24 hours before the end of the current period through your account settings on the App Store. ### What devices is MQTTCP compatible with? MQTTCP is designed for use on iPhones and iPads, supporting iOS devices. ### What is the age rating for MQTTCP? MQTTCP has an age rating of 4+, making it suitable for a wide range of users. ### How often is MQTTCP updated? The latest version of MQTTCP is 1.0.0, and it was last updated on May 21, 2026. Updates typically include performance improvements and new features. ### Can MQTTCP be used offline? While MQTTCP facilitates network communication, its core functions require an active network connection to interact with MQTT brokers, TCP servers, or UDP listeners. ## Version history (last 3 releases) ### 1.0.0 — 2026-05-21 This version optimizes the connection performance of the UDP client, providing more space for data monitoring. ------------------------------ Optimizations: 1. Improved page loading performance. ------------------------------ If you have any feedback or suggestions during use, please feel free to share them with us. For any specific product protocol support needs, you can directly contact zhangxiaouse@163.com. ### 0.1.0 — 2025-03-19 This version optimizes the connection performance of the TCP client, providing more space for data monitoring. ------------------------------ New Features: 1. The TCP client now supports viewing historical data. 2. The TCP client supports cyclic data transmission. 3. The TCP client allows copying received messages. ------------------------------ Optimizations: 1. Data visualization for the TCP client is now provided on a separate page, enhancing the scope of visualization. 2. Improved page loading performance. ------------------------------ If you have any feedback or suggestions during use, please feel free to share them with us. For any specific product protocol support needs, you can directly contact zhangxiaouse@163.com. ### 0.0.1 — 2025-03-17 No release notes. ## More apps by xiao zhang - [TouchGit](https://appshunter.io/ios/app/touchgit/id6742792971) - [FitCopilot](https://appshunter.io/ios/app/fitcopilot/id6743611149) - [有数记账](https://appshunter.io/ios/app/id6764815641) - [ConfigHub](https://appshunter.io/ios/app/confighub/id6772008923) All apps by xiao zhang: https://appshunter.io/developer/1086950190 --- *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 2026-06-11.*