FieldBus Toolkit
DONGSOO LEE Utilities iPhoneiPadiPod touch
FieldBus Toolkit is a free Utilities app for iPhone and iPad by DONGSOO LEE. Requires iOS 15.0. Updated October 22, 2026.
- Price
- Free
- on the App Store
- Size
- 28 MB
- Age 4+
- Updated
- Oct 22
- 2026 · v1.0.5
Screenshots
About FieldBus Toolkit
FieldBus Toolkit is the essential utility for embedded engineers and PLC programmers. Debug Modbus TCP, MQTT, HTTP, and socket communications directly from your mobile device. [Key Features] 1. Multi-Protocol Support - Modbus TCP Client - MQTT Client (Publish/Subscribe) - HTTP REST Client (GET, POST, PUT, DELETE) - TCP/UDP Client & Server (Echo/Broadcast) 2. Data Visualization - Send and receive data in ASCII or HEX format. - Real-time communication logs. 3. Efficiency Tools - Save frequently used commands as Macros for quick access. - One-touch data transmission. 4. Developer Friendly - Perfect for testing Arduino, ESP32, Raspberry Pi, and industrial PLCs.
What’s new
Version 1.0.5 · Updated October 22, 2026
[Device Support & Improvements] - iPhone Duo Support: When unfolded, the tool screens, bottom tabs and ad banner now stay clear of the side control bar, and the scroll bars sit at the edge of each card. - Landscape mode: You can now use the app in landscape on unfolded iPhone Duo and iPad. - Fixed an issue where the ad banner could fail to appear on unfolded iPhone Duo. - Content now stays clear of the notch, camera cutout and system bars, so nothing is hidden at the screen edges. - Minor bug fixes and performance optimizations.
App privacy
The developer, DONGSOO LEE, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases: Purchase History
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Crash Data, Performance Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Purchases: Purchase History
- Diagnostics: Crash Data, Performance Data
Used for: Third-Party Advertising, Analytics, App Functionality
Alternatives to FieldBus Toolkit
Looking for apps like FieldBus Toolkit? Here are 6 similar apps on the App Store.
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| FieldBus Toolkit | – | Free | October 22, 2026 | |
| Modbus TCP Tools | – | Free | Jul 22, 2026 | Compare |
| LineKeeper | – | Free | Oct 8, 2026 | Compare |
| Modbus Explorer | – | Free | Jul 19, 2026 | Compare |
| Wasserkraft_V0 | – | Free | Nov 2, 2024 | Compare |
| BLE Terminal V3 | – | Free | Mar 19, 2026 | Compare |
| Xhome Evo 2 | – | Free | Mar 3, 2024 | Compare |
Compare FieldBus Toolkit with the top alternatives: ratings, updates, ASO score and keyword gaps →