Comparison

FieldBus Toolkit vs Modbus Explorer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FieldBus Toolkit

Features
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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.

About

Modbus Explorer

Features
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Modbus Explorer helps automation engineers, field technicians, and maintenance teams discover and diagnose Modbus TCP devices on local industrial networks. Scan your network to find Modbus TCP devices, identify available device information, review open ports, and inspect communication health from one place. Key features: • Fast Modbus TCP device discovery • Device identification where supported • Open port overview • OSI-based diagnostics for physical, network, transport, and application layers • UID scan for Modbus TCP devices • Modbus read/write request tools • Network statistics including ping, jitter, packet loss, and response timing • Modbus TCP performance testing • Communication dashboard per device • PDF and CSV diagnostic reports • Optional engineer, company, and logo information for professional reports • Live Modbus HMI dashboard with configurable register cards • Saved networks with persistent HMI cards and PDF/CSV reports Modbus Explorer is designed for real industrial troubleshooting scenarios involving PLCs, HMIs, drives, gateways, and other Modbus TCP equipment. Whether you are commissioning a new panel, checking a device on site, documenting a network, or diagnosing communication issues, Modbus Explorer gives you a practical toolset for understanding what is happening on the wire. Some device identification and diagnostic information depends on the target device configuration and supported Modbus services. Türkçe | Deutsch | English | Français | Italiano | Español | Português | Русский | Azərbaycanca | 中文 | 日本語.

Screenshots

FieldBus Toolkit4 screens
Modbus Explorer4 screens

Verdict

The call

The clearest difference is ads: Modbus Explorer at none against FieldBus Toolkit's shown. Modbus Explorer also leads on update cadence (every 2 weeks vs every 2 months). FieldBus Toolkit's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FieldBus Toolkit sells 1 one-off in-app purchase and Modbus Explorer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

FieldBus Toolkit ships an update every 2 months, Modbus Explorer every 2 weeks. The most recent releases landed on September 8, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 2 level
FieldBus Toolkit versus Modbus Explorer: the parameters behind the verdict, then further details
ParameterFieldBus ToolkitModbus Explorer
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size29 MB5 MB
Age rating4+4+
DeveloperDONGSOO LEEHASAN BARAN

In-app purchases

1 purchases

FieldBus Toolkit

One-time1
  • Remove Ads$1.99
1 purchases

Modbus Explorer

One-time1
  • Modbus Explorer Pro$14.99

Questions

Is FieldBus Toolkit free?
FieldBus Toolkit is free to download, with in-app purchases available.
Is Modbus Explorer free?
Modbus Explorer is free to download, with in-app purchases available.
Do FieldBus Toolkit or Modbus Explorer have ads?
FieldBus Toolkit shows ads; Modbus Explorer does not.
Which is updated more often, FieldBus Toolkit or Modbus Explorer?
FieldBus Toolkit ships an update every 2 months, and Modbus Explorer every 2 weeks. Most recently, FieldBus Toolkit was updated on September 8, 2026 and Modbus Explorer on September 21, 2026.

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