# PLC Assistance vs PieeerU

The clearest difference is in-app purchases: PLC Assistance at none against PieeerU's 2. PLC Assistance also leads on update cadence (weekly vs every 3 weeks). PieeerU's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. PieeerU sells 2 in-app purchases, starting at $1.99 per month. PLC Assistance asks for nothing beyond the download.

PLC Assistance ships an update weekly, PieeerU every 3 weeks. The most recent releases landed on October 23, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PLC Assistance | PieeerU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (36 ratings)](https://appshunter.io/ios/app/plc-assistance/id6766073582/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 10 MB | 30 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zhihao Wang](https://appshunter.io/developer/1896185663) | [sasuke komatsu](https://appshunter.io/developer/1896687873) |

## What reviewers say

### 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


### PieeerU

[App page](https://appshunter.io/ios/app/pieeeru/id6769785505)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLCViewer PRO | $1.99 | per month |
| PLCViewer PRO | $29.99 | one-time |


## Frequently asked questions

### Is PLC Assistance free?

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

### Is PieeerU free?

PieeerU is free to download, with in-app purchases available.

### Do PLC Assistance or PieeerU have ads?

Neither PLC Assistance nor PieeerU shows ads.

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

PLC Assistance ships an update weekly, and PieeerU every 3 weeks. Most recently, PLC Assistance was updated on October 23, 2026 and PieeerU on October 31, 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.*