# Zooniverse vs Space Telescope App

The clearest difference is in-app purchases: Zooniverse at none against Space Telescope App's 4. Zooniverse also leads on ads (none vs shown) and review sentiment (59% vs 40%). Space Telescope App's advantage is update cadence (every 10 days vs every 2 months) and rating (4.0 vs 3.7). 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. Zooniverse asks for nothing beyond the download.

Space Telescope App holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 38 and 30 respectively. Written reviews complicate that: 59% of Zooniverse'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.

Zooniverse ships an update every 2 months, Space Telescope App every 10 days. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Zooniverse | Space Telescope App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (38 ratings)](https://appshunter.io/ios/app/zooniverse/id1194130243/reviews) | **[4.0 (30 ratings)](https://appshunter.io/ios/app/space-telescope-app/id1603876992/reviews)** |
| Number of ratings | **38** | 30 |
| Positive reviews | **58.8% 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 | 50 MB | 104 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zooniverse](https://appshunter.io/developer/1851894671) | [KAKHA GIORGASHVILI](https://appshunter.io/developer/1501353984) |

## What reviewers say

### Zooniverse

[App page](https://appshunter.io/ios/app/zooniverse/id1194130243)

Participate in real scientific research by classifying data for projects across various disciplines. Contribute to discoveries and datasets that advance knowledge, all from your mobile device. This platform connects volunteers with professional researchers for impactful citizen science.

**Highlights:** People-powered research platform, Volunteer opportunities, Access to mobile-friendly projects, Push notification updates, View publications, Contribute to scientific discoveries

**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 Zooniverse free?

Zooniverse 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, Zooniverse or Space Telescope App?

Space Telescope App is rated higher. Zooniverse averages 3.7 out of 5 from 38 ratings, while Space Telescope App averages 4.0 from 30 ratings.

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

Space Telescope App shows ads; Zooniverse does not.

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

Zooniverse ships an update every 2 months, and Space Telescope App every 10 days. Most recently, Zooniverse was updated on October 24, 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.*