# Cosmology vs BlackHolesHD

The clearest difference is review sentiment: Cosmology at 89% against BlackHolesHD's 27%. Cosmology also leads on rating (4.7 vs 3.4) and ratings volume (505 vs 38). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cosmology holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: Cosmology has 505 ratings behind it against 38, so its average is the more settled of the two. Written reviews point the same way: 89% of Cosmology's written reviews are positive against 27% of BlackHolesHD's.

## The numbers

| Metric | Cosmology | BlackHolesHD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (505 ratings)](https://appshunter.io/ios/app/cosmology/id1028872453/reviews)** | [3.4 (38 ratings)](https://appshunter.io/ios/app/blackholeshd/id1491124772/reviews) |
| Number of ratings | **505** | 38 |
| Positive reviews | **88.6% of reviews** | 27.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | Free |
| Size | 190 MB | 37 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aaron Day](https://appshunter.io/developer/1028872452) | [Francois PIEDNOEL](https://appshunter.io/developer/1044169697) |

## What reviewers say

### Cosmology

[App page](https://appshunter.io/ios/app/cosmology/id1028872453)

Explore the universe with stunning high-resolution images of celestial bodies. Journey through space, visiting planets and their moons, while learning about the evolution of space, time, and matter. Ponder the profound mysteries of existence.

**Highlights:** High-resolution images of planets, nebulae, and galaxies, Interactive space travel to planets and moons, Learn about the evolution of space, time, and matter, Expert narration by Dr. Aaron Day, Exploration of existential mysteries of the universe

**In-app purchases:** none

**What reviewers like**

- 🌟 Stunning, beautiful astrophotography images
- 📚 Educational content about space and universe
- 👍 Easy to use and understand interface
- 🎥 Informative videos and interactive features
- 🗺️ Interactive map for exploring cosmic scales

**What reviewers complain about**

- 🐛 Image interference/technical glitches
- 📖 Shallow explanations for non-experts
- ⚠️ Limited educational depth compared to NASA app
- 🤔 Big Bang theory focus may conflict with religious beliefs
- ❌ Incomplete sections (Milky Way, Island Universe)

**Reported bugs**

- Image display interference/hacking concerns
- App feels incomplete in certain sections

**Requested features**

- More interactive activities and engagement features
- Text-to-speech functionality
- More detailed explanations for beginner-level users
- Additional sub-categories and content sections
- Regular updates with current astronomical images


### 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 Cosmology free?

Cosmology 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, Cosmology or BlackHolesHD?

Cosmology is rated higher. Cosmology averages 4.7 out of 5 from 505 ratings, while BlackHolesHD averages 3.4 from 38 ratings.

### Do Cosmology or BlackHolesHD have ads?

Neither Cosmology nor BlackHolesHD shows ads.

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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.*