FieldBus Toolkit vs Modbus TCP FieldKit
Price, ratings, monetisation and update history for both apps, side by side â with what reviewers say about each.
FieldBus Toolkit
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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.
Modbus TCP FieldKit
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Modbus TCP FieldKit puts a professional Modbus TCP toolkit in your pocket. Commission equipment in the field, validate setups in the lab, or troubleshoot home automation â all from your iPhone. âĸ Connect to any Modbus TCP device â read coils and registers, monitor data blocks in real time âĸ Save device profiles for one-tap reconnection to frequently used endpoints âĸ Write with confidence â every write operation requires your explicit confirmation âĸ Built-in foreground simulator â run editable coils and holding registers for testing âĸ Track active connections and review bounded local logs kept on your device âĸ All data stays local â logs and exports are sanitized by default Requires Local Network access for device communication. Default server port is 1502. Background server operation and port 502 support pending device validation.
Screenshots
Verdict
The clearest difference is price: FieldBus Toolkit at Free against Modbus TCP FieldKit's $4.99. FieldBus Toolkit also leads on iOS requirement (13.0 vs 18.0). Modbus TCP FieldKit's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.
Scored on Price ¡ Rating ¡ Positive reviews ¡ Number of ratings ¡ Update frequency ¡ Ads ¡ In-app purchases ¡ Monetization ¡ Best chart rank ¡ Devices ¡ Requires iOS
FieldBus Toolkit is free to download; Modbus TCP FieldKit costs $4.99 up front. FieldBus Toolkit sells 1 one-off in-app purchase. Modbus TCP FieldKit asks for nothing beyond the download.
FieldBus Toolkit ships an update every 2 months, Modbus TCP FieldKit every 3 weeks. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.
| Parameter | FieldBus Toolkit | Modbus TCP FieldKit |
|---|---|---|
| Price | Free â better | $4.99 |
| Update frequency | Every 2 months | Every 3 weeks â better |
| Ads | Yes | No â better |
| In-app purchases | Yes | No â better |
| Devices | iPhone, iPad, iPod â better | iPhone, iPad |
| Requires iOS | 13.0 â better | 18.0 |
| Further details â not scored | ||
| Size | 29 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | DONGSOO LEE | Vladimir Chemeris |
In-app purchases
FieldBus Toolkit
- Remove Ads$1.99
Modbus TCP FieldKit
No in-app purchases
Questions
Is FieldBus Toolkit free?
Is Modbus TCP FieldKit free?
Do FieldBus Toolkit or Modbus TCP FieldKit have ads?
Which is updated more often, FieldBus Toolkit or Modbus TCP FieldKit?
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