# Our engines vs Bell TechPubs

The clearest difference is rating: Our engines at 4.5 against Bell TechPubs's 4.0. Our engines also leads on iOS requirement (15.0 vs 17.0). Bell TechPubs's advantage is update cadence (every 3 months vs every 7 months). On price, review sentiment, ratings volume 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.

Our engines holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Our engines ships an update every 7 months, Bell TechPubs every 3 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Our engines | Bell TechPubs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/our-engines/id638750487/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/bell-techpubs/id6504771476/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 2.7 GB | 116 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Safran](https://appshunter.io/developer/638750590) | [Bell Helicopter Textron Inc.](https://appshunter.io/developer/1436073546) |

## What reviewers say

### Our engines

[App page](https://appshunter.io/ios/app/our-engines/id638750487)

Explore the inner workings of civil and military aircraft engines through interactive 3D animations. Discover the aircraft they power and test your knowledge to become an aeronautical expert.

**Highlights:** Immersive 3D animations, Detailed engine operation exploration, Aircraft powered by engines, Knowledge testing quizzes, Iconic engine examples, Aeronautical engineering insights

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

**In-app purchases:** none


### Bell TechPubs

[App page](https://appshunter.io/ios/app/bell-techpubs/id6504771476)

Access technical manuals and interactive documents for mission-critical operations. Supports online and offline viewing, with features like hyper-linking and interactive figures for easy navigation and troubleshooting.

**Highlights:** Online and offline manual access, Interactive PDF and S1000D IETM formats, Integrated hyper-linking between documents, Update notifications for new revisions, Zoomable interactive figures, Fault isolation and wiring diagrams

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Our engines free?

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

### Is Bell TechPubs free?

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

### Which has better reviews, Our engines or Bell TechPubs?

Our engines is rated higher. Our engines averages 4.5 out of 5 from 2 ratings, while Bell TechPubs averages 4.0 from 3 ratings.

### Do Our engines or Bell TechPubs have ads?

Neither Our engines nor Bell TechPubs shows ads.

### Which is updated more often, Our engines or Bell TechPubs?

Our engines ships an update every 7 months, and Bell TechPubs every 3 months. Most recently, Our engines was updated on September 18, 2026 and Bell TechPubs on June 1, 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.*