# Discover Mars vs Space Telescope App

The clearest difference is review sentiment: Discover Mars at 100% against Space Telescope App's 40%. Discover Mars also leads on rating (5.0 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, ratings volume 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. Discover Mars asks for nothing beyond the download.

Discover Mars holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 11 and 30 respectively. Written reviews point the same way: 100% of Discover Mars's written reviews are positive against 40% of Space Telescope App's.

Discover Mars ships an update monthly, Space Telescope App every 10 days. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Discover Mars | Space Telescope App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/discover-mars/id1550710909/reviews)** | [4.0 (30 ratings)](https://appshunter.io/ios/app/space-telescope-app/id1603876992/reviews) |
| Number of ratings | 11 | **30** |
| Positive reviews | **100.0% 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 | 8 MB | 104 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manthan B Thakkar](https://appshunter.io/developer/1550710911) | [KAKHA GIORGASHVILI](https://appshunter.io/developer/1501353984) |

## What reviewers say

### Discover Mars

[App page](https://appshunter.io/ios/app/discover-mars/id1550710909)

Explore stunning, high-definition images captured on Mars by NASA rovers. View the latest photos, zoom in for detail, and learn fascinating facts about the Red Planet's atmosphere, gravity, and temperature.

**Highlights:** View latest Mars rover images, Slideshow mode for full-screen viewing, Zoom into high-definition photos, Save images to your device, Explore Mars' atmosphere, gravity, and temperature

**Features:** macOS Compatibility

**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 Discover Mars free?

Discover Mars 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, Discover Mars or Space Telescope App?

Discover Mars is rated higher. Discover Mars averages 5.0 out of 5 from 11 ratings, while Space Telescope App averages 4.0 from 30 ratings.

### Do Discover Mars or Space Telescope App have ads?

Space Telescope App shows ads; Discover Mars does not.

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

Discover Mars ships an update monthly, and Space Telescope App every 10 days. Most recently, Discover Mars was updated on October 15, 2026 and Space Telescope App on October 21, 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.*