PLC Pro vs I/E Bible
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PLC Pro
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PLC Pro is the essential professional calculator designed specifically for instrumentation engineers, technicians, and control systems specialists. Streamline your fieldwork with precise tools for signal calibration, alarm configuration, and PLC/DCS integrations—all in one powerful, pocket-sized app. Key Features: • Multi-Signal Support – Effortlessly handle 4-20mA, 0-20mA, or 0-10V signals • 5-Point Signal Check – Generate instant calibration checkpoints at 0%, 25%, 50%, 75%, and 100% • Raw Count Conversion – Seamlessly convert between ADC/DAC counts and engineering units for any PLC or DCS system • Alarm Setpoint Calculator – Compute low/high pre-trip and trip values with deadband resets • Deviation Alarms – Apply deviation percentages and view values across all checkpoints • Square Root Extraction – Built-in calculations for flow transmitters • Save & Organize – Store unlimited calculations for fast field reference • Fault Detection Reference – Integrated NAMUR NE43 guidelines for reliable signal diagnostics Ideal For: Instrument technicians • Control systems engineers • PLC/DCS programmers • Process engineers • Maintenance professionals • Automation specialists Elevate your instrumentation workflow with PLC Pro—accuracy and efficiency at your fingertips.
I/E Bible
This app provides a centralized hub for instrument calibration resources. It offers instant answers to process instrumentation questions through an integrated AI agent, streamlining calibration workflows.
- Instrument calibration resources
- AI agent for process instrumentation
- Instant answers to technical questions
- Streamlined calibration workflows
- Centralized resource hub
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Streamline your instrument calibration process with I/E Bible. Get all your calibration resources and get instant answers to your process instrumentation questions with our integrated AI agent. Oscar Corona/Jacob Yepez
Screenshots
Verdict
The clearest difference is price: I/E Bible at Free against PLC Pro's $9.99. On ads, in-app purchases, device support and iOS requirement 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
I/E Bible is free to download; PLC Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | PLC Pro | I/E Bible |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | — | 5.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 47 MB | 198 MB |
| Age rating | 4+ | 4+ |
| Developer | James Johnson | Oscar Corona |
In-app purchases
PLC Pro
No in-app purchases
I/E Bible
No in-app purchases
