FieldBus Toolkit
Utilities
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
[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.
The developer, DONGSOO LEE, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DONGSOO LEE
- Size
- 29.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 5 more
- English, German, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $1.99
- Copyright
- © 2026 DreamSoftware