# EngineerCalc vs PLC Assistance

The clearest difference is price: PLC Assistance at Free against EngineerCalc's $1.99. PLC Assistance also leads on update cadence (weekly vs every 60 months). EngineerCalc's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.6). On ads and in-app purchases there is nothing between them.

PLC Assistance is free to download; EngineerCalc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EngineerCalc ships an update every 60 months, PLC Assistance weekly. The most recent releases landed on September 15, 2026 and August 9, 2026 respectively.

## The numbers

| Metric | EngineerCalc | PLC Assistance |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (45 ratings)](https://appshunter.io/ios/app/plc-assistance/id6766073582/reviews)** |
| Number of ratings | — | **45** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 60 months | **Weekly** |
| Monetization | — | Free |
| Size | 10 MB | 10 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [oskari saarinen](https://appshunter.io/developer/1234576917) | [Zhihao Wang](https://appshunter.io/developer/1896185663) |

## What reviewers say

### EngineerCalc

[App page](https://appshunter.io/ios/app/engineercalc/id1454820389)

**Features:** macOS Compatibility

**In-app purchases:** none


### PLC Assistance

[App page](https://appshunter.io/ios/app/plc-assistance/id6766073582)

This AI-powered tool assists electrical and automation engineers in understanding PLC logic, troubleshooting issues, and enhancing their workflow. It provides instant answers and programming support for various industrial automation systems, helping users save time and improve efficiency.

**Highlights:** PLC programming support (ladder logic, structured text), Troubleshooting and debugging guidance, Instant answers for industrial automation problems, AI assistant tailored for engineers, Support for Siemens, Allen-Bradley, and other PLC systems

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EngineerCalc free?

EngineerCalc costs $1.99, with no in-app purchases.

### Is PLC Assistance free?

PLC Assistance is free to download, with no in-app purchases.

### Do EngineerCalc or PLC Assistance have ads?

Neither EngineerCalc nor PLC Assistance shows ads.

### Which is updated more often, EngineerCalc or PLC Assistance?

EngineerCalc ships an update every 60 months, and PLC Assistance weekly. Most recently, EngineerCalc was updated on September 15, 2026 and PLC Assistance on August 9, 2026.

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