# xSky vs Hubble Space Telescope Tracker

The clearest difference is review sentiment: xSky at 79% against Hubble Space Telescope Tracker's 0%. xSky also leads on rating (4.3 vs 1.0) and in-app purchases (none vs 1). Hubble Space Telescope Tracker's advantage is iOS requirement (12.0 vs 16.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Hubble Space Telescope Tracker sells 1 one-off in-app purchase. xSky asks for nothing beyond the download.

xSky holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: xSky has 80 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 79% of xSky's written reviews are positive against 0% of Hubble Space Telescope Tracker's.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | xSky | Hubble Space Telescope Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (80 ratings)](https://appshunter.io/ios/app/xsky/id850941042/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/hubble-space-telescope-tracker/id6468819172/reviews) |
| Number of ratings | **80** | 2 |
| Positive reviews | **79.4% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 60 MB | 72 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oleg Sur](https://appshunter.io/developer/1454732575) | [KAKHA GIORGASHVILI](https://appshunter.io/developer/1501353984) |

## What reviewers say

### xSky

[App page](https://appshunter.io/ios/app/xsky/id850941042)

Explore the cosmos with a virtual telescope. Point your device at the sky to identify celestial bodies. Zoom in for detailed views and use a search function to locate specific objects.

**Highlights:** Virtual telescope functionality, Identify Sun, Moon, Planets, Stars, Galaxies, Zoom up to a million times, Screen lock to stop motion, Object search arrow, Soft music and sound effects

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🔭 Realistic space simulation
- ✨ Beautiful visuals and music
- 👍 Easy to use interface
- 💡 Great for learning astronomy
- 💯 Highly accurate object identification

**What reviewers complain about**

- 🐛 App crashing issues
- 🧭 Location services not working
- 🔄 Inconsistent with reality (out of sync)
- 📱 Not optimized for all devices (e.g., iPhone 12)
- 🎛️ Hard to control

**Reported bugs**

- App keeps crashing
- Location services not working/picking a country
- App closes immediately upon opening
- App is glitchy and moves by itself
- Search button not working in horizontal position

**Requested features**

- Camera feature for high-quality photos
- Ability to turn down exposure for photos
- Facts read aloud about celestial objects
- Traditional constellation names (e.g., Virgo, Taurus)
- Show International Space Station or other satellites


### Hubble Space Telescope Tracker

[App page](https://appshunter.io/ios/app/hubble-space-telescope-tracker/id6468819172)

Follow NASA's Hubble Space Telescope mission in real time. Explore a gallery of stunning images, engage in discussions, and learn about space. Receive notifications for new discoveries and test your knowledge with quizzes.

**Highlights:** Real-time mission progress, Image gallery, Discussion forums, Notifications for new images, 3D Solar system model, Ask an Astronomer feature

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


## Frequently asked questions

### Is xSky free?

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

### Is Hubble Space Telescope Tracker free?

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

### Which has better reviews, xSky or Hubble Space Telescope Tracker?

xSky is rated higher. xSky averages 4.3 out of 5 from 80 ratings, while Hubble Space Telescope Tracker averages 1.0 from 2 ratings.

### Do xSky or Hubble Space Telescope Tracker have ads?

Hubble Space Telescope Tracker shows ads; xSky does not.

### Which is updated more often, xSky or Hubble Space Telescope Tracker?

xSky ships an update every 3 months, and Hubble Space Telescope Tracker every 3 months. Most recently, xSky was updated on November 1, 2026 and Hubble Space Telescope Tracker on November 1, 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.*