# PLC Pro vs I/E Bible

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.

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.

## The numbers

| Metric | PLC Pro | I/E Bible |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ie-bible/id6761774585/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | — | Free |
| Size | 47 MB | 198 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [James Johnson](https://appshunter.io/developer/1861867738) | [Oscar Corona](https://appshunter.io/developer/1891403709) |

## What reviewers say

### PLC Pro

[App page](https://appshunter.io/ios/app/plc-pro/id6757437125)

**In-app purchases:** none


### I/E Bible

[App page](https://appshunter.io/ios/app/ie-bible/id6761774585)

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.

**Highlights:** Instrument calibration resources, AI agent for process instrumentation, Instant answers to technical questions, Streamlined calibration workflows, Centralized resource hub

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PLC Pro free?

PLC Pro costs $9.99, with no in-app purchases.

### Is I/E Bible free?

I/E Bible is free to download, with no in-app purchases.

### Do PLC Pro or I/E Bible have ads?

Neither PLC Pro nor I/E Bible shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*