# Cosmology vs Space Telescope App

The clearest difference is review sentiment: Cosmology at 89% against Space Telescope App's 40%. Cosmology also leads on rating (4.7 vs 4.0) and in-app purchases (none vs 4). Space Telescope App's advantage is update cadence (every 10 days vs monthly). On price and device support there is nothing between them.

Both are free to download. Space Telescope App sells 4 in-app purchases, starting at $4.99 per month. Cosmology asks for nothing beyond the download.

Cosmology holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Cosmology has 505 ratings behind it against 30, 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 40% of Space Telescope App's.

Cosmology ships an update monthly, Space Telescope App every 10 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Cosmology | Space Telescope App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (505 ratings)](https://appshunter.io/ios/app/cosmology/id1028872453/reviews)** | [4.0 (30 ratings)](https://appshunter.io/ios/app/space-telescope-app/id1603876992/reviews) |
| Number of ratings | **505** | 30 |
| Positive reviews | **88.6% of reviews** | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 190 MB | 104 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aaron Day](https://appshunter.io/developer/1028872452) | [KAKHA GIORGASHVILI](https://appshunter.io/developer/1501353984) |

## 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


### Space Telescope App

[App page](https://appshunter.io/ios/app/space-telescope-app/id1603876992)

Explore the universe with real-time updates and stunning visuals from NASA's James Webb Space Telescope. Engage with expert insights, join community discussions, and test your knowledge with interactive quizzes. Discover distant galaxies and unlock the secrets of the early universe.

**Highlights:** Live mission updates, Breathtaking image gallery, Expert Q&A with astronomers, Community discussions, Interactive space quizzes, 3D solar system explorer, Exclusive wallpapers

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Ad-Free Plan | $4.99 | per month |
| Ad-Free Annual Access | $29.99 | per year |
| Premium | $2.99 | one-time |
| Buy 1M Points | $99.99 | one-time |


## Frequently asked questions

### Is Cosmology free?

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

### Is Space Telescope App free?

Space Telescope App is free to download, with in-app purchases available.

### Which has better reviews, Cosmology or Space Telescope App?

Cosmology is rated higher. Cosmology averages 4.7 out of 5 from 505 ratings, while Space Telescope App averages 4.0 from 30 ratings.

### Do Cosmology or Space Telescope App have ads?

Space Telescope App shows ads; Cosmology does not.

### Which is updated more often, Cosmology or Space Telescope App?

Cosmology ships an update monthly, and Space Telescope App every 10 days. Most recently, Cosmology was updated on October 15, 2026 and Space Telescope App on October 7, 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.*