# Engineering Inc. vs P.J. Keating

The clearest difference is iOS requirement: Engineering Inc. at 12.0 against P.J. Keating's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 32 months. The most recent releases landed on May 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Engineering Inc. | P.J. Keating |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | Every 32 months |
| Size | 53 MB | 23 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [ACEC](https://appshunter.io/developer/879147908) | [P.J. Keating Co.](https://appshunter.io/developer/1450655187) |

## What reviewers say

### Engineering Inc.

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

**Features:** macOS Compatibility

**In-app purchases:** none


### P.J. Keating

[App page](https://appshunter.io/ios/app/pj-keating/id1450655188)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Engineering Inc. free?

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

### Is P.J. Keating free?

P.J. Keating is free to download, with no in-app purchases.

### Do Engineering Inc. or P.J. Keating have ads?

Neither Engineering Inc. nor P.J. Keating shows ads.

### Which is updated more often, Engineering Inc. or P.J. Keating?

Engineering Inc. ships an update every 32 months, and P.J. Keating every 32 months. Most recently, Engineering Inc. was updated on May 16, 2026 and P.J. Keating on September 8, 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.*