# Engineering Inc. vs Power Systems Design

The clearest difference is update cadence: Power Systems Design at every 9 months against Engineering Inc.'s every 32 months. Power Systems Design also leads on iOS requirement (8.2 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Engineering Inc. ships an update every 32 months, Power Systems Design every 9 months. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Engineering Inc. | Power Systems Design |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/power-systems-design/id908590026/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 9 months** |
| Monetization | — | Free |
| Size | 53 MB | 25 MB |
| Requires iOS | 12.0 | **8.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ACEC](https://appshunter.io/developer/879147908) | [Intecons](https://appshunter.io/developer/1031812770) |

## What reviewers say

### Engineering Inc.

[App page](https://appshunter.io/ios/app/engineering-inc/id879147905)

**Features:** macOS Compatibility

**In-app purchases:** none


### Power Systems Design

[App page](https://appshunter.io/ios/app/power-systems-design/id908590026)

This app delivers in-depth editorial content for power electronic design engineers. It focuses on helping professionals with their latest product designs and fosters global innovation within the community.

**Highlights:** In-depth editorial content, Focus on product design, Global innovation support, Community for engineers, Latest design insights

**In-app purchases:** none


## Frequently asked questions

### Is Engineering Inc. free?

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

### Is Power Systems Design free?

Power Systems Design is free to download, with no in-app purchases.

### Do Engineering Inc. or Power Systems Design have ads?

Neither Engineering Inc. nor Power Systems Design shows ads.

### Which is updated more often, Engineering Inc. or Power Systems Design?

Engineering Inc. ships an update every 32 months, and Power Systems Design every 9 months. Most recently, Engineering Inc. was updated on October 5, 2026 and Power Systems Design on October 2, 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.*