# Aircraft Engine vs HoppAR

The clearest difference is review sentiment: HoppAR at 85% against Aircraft Engine's 25%. HoppAR also leads on rating (4.8 vs 2.1) and ratings volume (579 vs 18). Aircraft Engine's advantage is in-app purchases (none vs 14) and update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. HoppAR sells 14 in-app purchases, starting at $7.99 per year. Aircraft Engine asks for nothing beyond the download.

HoppAR holds the better App Store score, 4.8 against 2.1. That said, the two scores are not equally well evidenced: HoppAR has 579 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 25% of Aircraft Engine's written reviews are positive against 85% of HoppAR's.

Aircraft Engine ships an update every 3 days, HoppAR every 2 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Aircraft Engine | HoppAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (18 ratings)](https://appshunter.io/ios/app/aircraft-engine/id1377169268/reviews) | **[4.8 (579 ratings)](https://appshunter.io/ios/app/hoppar/id1497739070/reviews)** |
| Number of ratings | 18 | **579** |
| Positive reviews | 25.0% of reviews | **85.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 145 MB | 372 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Numix](https://appshunter.io/developer/970759601) | [Josef Grunig](https://appshunter.io/developer/1497739069) |

## What reviewers say

### Aircraft Engine

[App page](https://appshunter.io/ios/app/aircraft-engine/id1377169268)

Explore the intricate structure and operation of an aircraft engine in augmented reality. Utilize various view modes and animations to understand its mechanics. Simply target an instruction image with your device to bring the 3D engine to life.

**Highlights:** Augmented reality engine visualization, Multiple view modes, Interactive animations, 3D engine exploration, Target image recognition

**In-app purchases:** none


### HoppAR

[App page](https://appshunter.io/ios/app/hoppar/id1497739070)

Experience rocket launches and landings in augmented reality. Control thrust vectoring, perform engine test fires, and customize rockets with your own colors. Explore a variety of real spacecraft and space mission scenarios.

**Highlights:** Augmented reality rocket launches, Manual thrust vectoring control, Rocket engine test fires, Customizable rocket coloring, Variety of real spacecraft models, Entry, Descent, and Landing simulations, Indoor and Outdoor AR modes

**Features:** Family Sharing

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HoppAR Supporter | $7.99 | per year |
| FALCON HEAVY | $0.99 | one-time |
| STARSHIP Belly Flop | $0.99 | one-time |
| SUPER HEAVY | $0.99 | one-time |
| DELTA IV HEAVY | $0.99 | one-time |
| PERSEVERANCE | $0.99 | one-time |
| DRONESHIP OCISLY | $0.99 | one-time |
| NEW SHEPARD | $0.99 | one-time |
| ARIANE 5 | $0.99 | one-time |
| ARTEMIS I | $0.99 | one-time |
| SOYUZ | $0.99 | one-time |
| ELECTRON | $0.99 | one-time |
| SATURN V | $1.99 | one-time |
| Control Feature | $2.99 | one-time |

**What reviewers like**

- 🎮 Excellent AR simulation and gameplay mechanics
- 🎨 High-quality rocket models and realistic designs
- 🎵 Great music and audio (with some caveats)
- 📱 Well-made and polished app overall
- 🌟 Immersive and satisfying launch experience

**What reviewers complain about**

- 💰 Premium rockets locked behind paywall
- 🐛 AR functionality issues on some devices
- 📱 Orientation requirement (vertical/horizontal) frustrating
- ⏱️ Limited gameplay - rockets auto-launch and auto-land
- 🎬 Short 5-second clips lack player control

**Reported bugs**

- Black screen on horizontal surface scanning
- Camera not working on certain devices
- App won't open or crashes on startup
- Gray screen display issue
- iPad AR compatibility problems

**Requested features**

- Space Shuttle addition
- Manual control for Falcon 9 and Dragon
- Free access to premium rockets
- Launch towers for all rockets
- Soyuz rocket


## Frequently asked questions

### Is Aircraft Engine free?

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

### Is HoppAR free?

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

### Which has better reviews, Aircraft Engine or HoppAR?

HoppAR is rated higher. Aircraft Engine averages 2.1 out of 5 from 18 ratings, while HoppAR averages 4.8 from 579 ratings.

### Do Aircraft Engine or HoppAR have ads?

Neither Aircraft Engine nor HoppAR shows ads.

### Which is updated more often, Aircraft Engine or HoppAR?

Aircraft Engine ships an update every 3 days, and HoppAR every 2 months. Most recently, Aircraft Engine was updated on October 13, 2026 and HoppAR on October 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.*