# Copernicus Sentinel vs Space Telescope App

The clearest difference is in-app purchases: Copernicus Sentinel at none against Space Telescope App's 4. Copernicus Sentinel also leads on ads (none vs shown) and rating (4.3 vs 4.0). Space Telescope App's advantage is update cadence (every 10 days vs every 2 months) and review sentiment (40% vs 14%). On price, ratings volume, device support and iOS requirement there is nothing between them.

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

Copernicus Sentinel holds the better App Store score, 4.3 against 4.0. Both are backed by a comparable volume of ratings — 18 and 30 respectively. Written reviews complicate that: 14% of Copernicus Sentinel's written reviews are positive against 40% of Space Telescope App's, so the app with the better star average is not the one people write more warmly about.

Copernicus Sentinel ships an update every 2 months, Space Telescope App every 10 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Copernicus Sentinel | Space Telescope App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (18 ratings)](https://appshunter.io/ios/app/copernicus-sentinel/id1036738151/reviews)** | [4.0 (30 ratings)](https://appshunter.io/ios/app/space-telescope-app/id1603876992/reviews) |
| Number of ratings | 18 | **30** |
| Positive reviews | 14.3% of reviews | **40.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 56 MB | 104 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ESA - European Space Agency](https://appshunter.io/developer/429660009) | [KAKHA GIORGASHVILI](https://appshunter.io/developer/1501353984) |

## What reviewers say

### Copernicus Sentinel

[App page](https://appshunter.io/ios/app/copernicus-sentinel/id1036738151)

Explore and track Earth observation satellites in real-time. Discover satellite details, view 3D models, and receive notifications for overhead passes. Stay updated on the latest news and products from this space observation program.

**Highlights:** Real-time satellite tracking, Detailed 3D satellite models, Overhead pass notifications, Latest news and product updates, Historical data transmission visualization, Interactive 3D globe exploration

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

**In-app purchases:** none


### 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 Copernicus Sentinel free?

Copernicus Sentinel 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, Copernicus Sentinel or Space Telescope App?

Copernicus Sentinel is rated higher. Copernicus Sentinel averages 4.3 out of 5 from 18 ratings, while Space Telescope App averages 4.0 from 30 ratings.

### Do Copernicus Sentinel or Space Telescope App have ads?

Space Telescope App shows ads; Copernicus Sentinel does not.

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

Copernicus Sentinel ships an update every 2 months, and Space Telescope App every 10 days. Most recently, Copernicus Sentinel was updated on October 2, 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.*