# zdSCADA vs Wood ERC

The clearest difference is rating: zdSCADA at 4.3 against Wood ERC's 2.8. Wood ERC's advantage is iOS requirement (9.0 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

zdSCADA holds the better App Store score, 4.3 against 2.8. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

zdSCADA ships an update every 3 months, Wood ERC every 2 months. The most recent releases landed on October 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | zdSCADA | Wood ERC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/zdscada/id1013876842/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/wood-erc/id1322605844/reviews) |
| Number of ratings | 3 | **6** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 8 MB | 14 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [zdSCADA, L.P.](https://appshunter.io/developer/1013876841) | [WOOD GROUP PSN, INC.](https://appshunter.io/developer/1293848025) |

## What reviewers say

### zdSCADA

[App page](https://appshunter.io/ios/app/zdscada/id1013876842)

This mobile application offers data collection and monitoring for electronic devices within the oil and gas sector. It extends a web-based solution to a mobile platform, catering exclusively to existing customers.

**Highlights:** Data collection, Device monitoring, Oil and gas industry focus, Mobile platform extension, Web-based solution integration

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

**In-app purchases:** none


### Wood ERC

[App page](https://appshunter.io/ios/app/wood-erc/id1322605844)

This mobile application offers employees and customer employees access to essential training, competency, and HSE tools. It's designed to help personnel work safely and compliantly by providing necessary resources.

**Highlights:** Access training materials, Competency tracking, HSE tools and resources, Ensure safe work practices, Compliance assistance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is zdSCADA free?

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

### Is Wood ERC free?

Wood ERC is free to download, with no in-app purchases.

### Which has better reviews, zdSCADA or Wood ERC?

zdSCADA is rated higher. zdSCADA averages 4.3 out of 5 from 3 ratings, while Wood ERC averages 2.8 from 6 ratings.

### Do zdSCADA or Wood ERC have ads?

Neither zdSCADA nor Wood ERC shows ads.

### Which is updated more often, zdSCADA or Wood ERC?

zdSCADA ships an update every 3 months, and Wood ERC every 2 months. Most recently, zdSCADA was updated on October 24, 2026 and Wood ERC on September 22, 2026.

---

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