# A Solar System Journey vs BlackHolesHD

The clearest difference is rating: A Solar System Journey at 4.5 against BlackHolesHD's 3.4. A Solar System Journey also leads on ratings volume (434 vs 41). BlackHolesHD's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, review sentiment, 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.

A Solar System Journey holds the better App Store score, 4.5 against 3.4. That said, the two scores are not equally well evidenced: A Solar System Journey has 434 ratings behind it against 41, so its average is the more settled of the two. Written reviews complicate that: 26% of A Solar System Journey's written reviews are positive against 27% of BlackHolesHD's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | A Solar System Journey | BlackHolesHD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (434 ratings)](https://appshunter.io/ios/app/a-solar-system-journey/id444804070/reviews)** | [3.4 (41 ratings)](https://appshunter.io/ios/app/blackholeshd/id1491124772/reviews) |
| Number of ratings | **434** | 41 |
| Positive reviews | 25.7% of reviews | **27.3% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | — |
| Monetization | Ad-supported | **Free** |
| Size | 15 MB | 37 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Rouda](https://appshunter.io/developer/396597129) | [Francois PIEDNOEL](https://appshunter.io/developer/1044169697) |

## What reviewers say

### A Solar System Journey

[App page](https://appshunter.io/ios/app/a-solar-system-journey/id444804070)

Explore our solar system with detailed information and images for each planet. Discover facts, view animated orbits, and learn about Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

**Highlights:** Detailed planet information, Close-up planet images, Animated planet orbits, Facts about each planet, Covers all major planets

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✨ Nice graphics
- ✨ Kool presentation
- ✨ Interesting solar system facts
- ✨ Helpful for astronomy

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 App freezes
- 🐛 App won't download
- 🐛 Planets rotate backwards
- 🐛 Incorrect astronomical facts

**Reported bugs**

- App doesn't work after download
- Cannot exit planet view
- App crashes on opening
- Planets rotate and orbit backwards
- Mercury and Earth both listed as densest

**Requested features**

- Add dwarf plants and other stuff
- Add more moons
- Add more photos
- Add more data about planets
- Add Pluto


### BlackHolesHD

[App page](https://appshunter.io/ios/app/blackholeshd/id1491124772)

Experience a realistic simulation of a black hole with smooth, high-fidelity animation. This educational tool brings the fascinating physics of celestial bodies directly to your device.

**Highlights:** Realistic black hole simulation, Smooth animation, High-fidelity rendering, Educational tool, Pocket-sized celestial physics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is A Solar System Journey free?

A Solar System Journey is free to download, with no in-app purchases.

### Is BlackHolesHD free?

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

### Which has better reviews, A Solar System Journey or BlackHolesHD?

A Solar System Journey is rated higher. A Solar System Journey averages 4.5 out of 5 from 434 ratings, while BlackHolesHD averages 3.4 from 41 ratings.

### Do A Solar System Journey or BlackHolesHD have ads?

A Solar System Journey shows ads; BlackHolesHD does not.

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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.*