# AeroEngineS vs Mechanical Formula

The clearest difference is in-app purchases: AeroEngineS at none against Mechanical Formula's 1. AeroEngineS also leads on update cadence (every 3 days vs every 4 months) and rating (5.0 vs 4.7). Mechanical Formula's advantage is ratings volume (34 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mechanical Formula sells 1 one-off in-app purchase. AeroEngineS asks for nothing beyond the download.

AeroEngineS holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Mechanical Formula has 34 ratings behind it against 1, so its average is the more settled of the two.

AeroEngineS ships an update every 3 days, Mechanical Formula every 4 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AeroEngineS | Mechanical Formula |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aeroengines/id1451710013/reviews)** | [4.7 (34 ratings)](https://appshunter.io/ios/app/mechanical-formula/id1668948373/reviews) |
| Number of ratings | 1 | **34** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 42 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aristotle University of Thessaloniki](https://appshunter.io/developer/542325073) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### AeroEngineS

[App page](https://appshunter.io/ios/app/aeroengines/id1451710013)

This app simulates the thermodynamic cycles and performance of various aircraft and rocket engines. It calculates key parameters like thrust, mass flow, and emissions, and can predict compressor map operating points.

**Highlights:** Turbojet and turbofan engine simulation, Rocket engine cycle analysis, Ramjet engine simulation, Emissions calculation, Compressor map prediction, Thermodynamic cycle analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Mechanical Formula

[App page](https://appshunter.io/ios/app/mechanical-formula/id1668948373)

This app provides over 200 essential mechanical engineering formulas and calculations in a user-friendly tool. It's designed to simplify complex concepts and speed up problem-solving for students, professionals, and educators.

**Highlights:** 200+ mechanical engineering formulas, Instant calculations, Intuitive interface, Real-world application explanations, Exam preparation aid, Lifetime Premium option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is AeroEngineS free?

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

### Is Mechanical Formula free?

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

### Which has better reviews, AeroEngineS or Mechanical Formula?

AeroEngineS is rated higher. AeroEngineS averages 5.0 out of 5 from 1 ratings, while Mechanical Formula averages 4.7 from 34 ratings.

### Do AeroEngineS or Mechanical Formula have ads?

Neither AeroEngineS nor Mechanical Formula shows ads.

### Which is updated more often, AeroEngineS or Mechanical Formula?

AeroEngineS ships an update every 3 days, and Mechanical Formula every 4 months. Most recently, AeroEngineS was updated on October 7, 2026 and Mechanical Formula on October 24, 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.*