# AeroEngineS vs CloudLabs Acid

The clearest difference is update cadence: AeroEngineS at every 3 days against CloudLabs Acid's every 28 months. CloudLabs Acid's advantage is iOS requirement (9.0 vs 14.0). 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.

AeroEngineS ships an update every 3 days, CloudLabs Acid every 28 months. The most recent releases landed on June 24, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | AeroEngineS | CloudLabs Acid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aeroengines/id1451710013/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 28 months |
| Monetization | Free | — |
| Size | 7 MB | 71 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aristotle University of Thessaloniki](https://appshunter.io/developer/542325073) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## 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


### CloudLabs Acid

[App page](https://appshunter.io/ios/app/cloudlabs-acid-base-enthalpy/id1596470901)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AeroEngineS free?

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

### Is CloudLabs Acid free?

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

### Do AeroEngineS or CloudLabs Acid have ads?

Neither AeroEngineS nor CloudLabs Acid shows ads.

### Which is updated more often, AeroEngineS or CloudLabs Acid?

AeroEngineS ships an update every 3 days, and CloudLabs Acid every 28 months. Most recently, AeroEngineS was updated on June 24, 2026 and CloudLabs Acid on May 16, 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.*