# gravity detector vs Celestia

The clearest difference is rating: gravity detector at 5.0 against Celestia's 4.4. gravity detector also leads on in-app purchases (none vs 4) and iOS requirement (11.0 vs 16.0). Celestia's advantage is ratings volume (338 vs 4). On price, ads and device support there is nothing between them.

Both are free to download. Celestia sells 4 in-app purchases, starting at $0.99 per 7 days. gravity detector asks for nothing beyond the download.

gravity detector holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Celestia has 338 ratings behind it against 4, so its average is the more settled of the two.

## The numbers

| Metric | gravity detector | Celestia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/gravity-detector/id1480160202/reviews)** | [4.4 (338 ratings)](https://appshunter.io/ios/app/celestia-space-simulator/id1500434829/reviews) |
| Number of ratings | 4 | **338** |
| Positive reviews | — | 78.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 550 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [乃君 黄](https://appshunter.io/developer/1337343608) | [林峰 李](https://appshunter.io/developer/1186547508) |

## What reviewers say

### gravity detector

[App page](https://appshunter.io/ios/app/gravity-detector/id1480160202)

Measure the G-force experienced in elevators or planes and compare it to planetary gravity. Record environmental photos, videos, and coordinates to save for later reference, and view G-values on a map.

**Highlights:** Measure G-force in real-time, Compare G-force to planetary gravity, Record environmental photos and videos, Save location coordinates, View G-values on a map

**In-app purchases:** none


### Celestia

[App page](https://appshunter.io/ios/app/celestia-space-simulator/id1500434829)

Explore the universe in real-time 3D. Visit planets, moons, star clusters, and galaxies, viewing them from any point in space and time. Customize your experience with expandable content and detailed simulations.

**Highlights:** Real-time 3D space visualization, Explore planets, moons, stars, galaxies, Accurate solar system object positions, Interactive planetarium mode, Expandable content with add-ons, Customizable celestial databases

**Features:** Game Controller support, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Celestia PLUS (Weekly) | $0.99 | per 7 days |
| Celestia PLUS (Monthly) | $1.99 | per month |
| Celestia PLUS (Yearly) | $19.99 | per year |
| Celestia PLUS (Lifetime) | $79.99 | one-time |

**What reviewers like**

- ⭐ Realistic space simulation
- 🌌 Ability to explore galaxies and star systems
- 🔍 Detailed planet and moon textures
- 📷 Great for taking screenshots
- 🤖 Reminds users of Space Engine

**What reviewers complain about**

- 🐛 Occasional crashes and glitches
- 🌌 Limited exploration beyond Milky Way and Andromeda
- 🌍 Flat terrain on planets
- 🔍 Lack of detail on some celestial objects
- 🔒 Paywall for some features

**Reported bugs**

- Milky Way and other galaxy textures not loading properly
- Crashes when using certain add-ons
- Issues with planet and moon orbits not being accurate

**Requested features**

- Add more exoplanets and distant star systems
- Implement terrain generation for planets
- Expand to include more galaxies and the overall universe structure
- Add support for black holes, pulsars, and other exotic objects
- Improve controls and camera movement


## Frequently asked questions

### Is gravity detector free?

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

### Is Celestia free?

Celestia is free to download, with in-app purchases available.

### Which has better reviews, gravity detector or Celestia?

gravity detector is rated higher. gravity detector averages 5.0 out of 5 from 4 ratings, while Celestia averages 4.4 from 338 ratings.

### Do gravity detector or Celestia have ads?

Neither gravity detector nor Celestia shows ads.

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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.*