# 3D Solar System vs gravity detector

The clearest difference is rating: gravity detector at 5.0 against 3D Solar System's 4.4. gravity detector also leads on in-app purchases (none vs 12) and ads (none vs shown). 3D Solar System's advantage is ratings volume (1.7K vs 4). On price and device support there is nothing between them.

Both are free to download. 3D Solar System sells 12 in-app purchases, starting at $7.99 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: 3D Solar System has 1.7K ratings behind it against 4, so its average is the more settled of the two.

## The numbers

| Metric | 3D Solar System | gravity detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (1.7K ratings)](https://appshunter.io/ios/app/3d-solar-system-planets-view/id983877380/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/gravity-detector/id1480160202/reviews)** |
| Number of ratings | **1.7K** | 4 |
| Positive reviews | 28.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 351 MB | 18 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Education Terra](https://appshunter.io/developer/946819038) | [乃君 黄](https://appshunter.io/developer/1337343608) |

## What reviewers say

### 3D Solar System

[App page](https://appshunter.io/ios/app/3d-solar-system-planets-view/id983877380)

Explore the solar system in 3D and augmented reality. Learn about planets, moons, stars, and constellations through interactive models, scientific facts, and engaging quizzes. Create your own planets with AI.

**Highlights:** 3D & AR Solar System models, Scientific facts about celestial bodies, Interactive star map, Engaging educational tasks and quizzes, AI-powered planet creation

**Features:** macOS Compatibility

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week Subscription | $7.99 | per 7 days |
| 1 Month PRO | $9.99 | per month |
| 1 month Sale | $10.99 | per month |
| 12 months sale | $14.99 | per year |
| 6 months | $19.99 | per 6 months |
| Astronomy guide - Sky atlas | $19.99 | per month |
| 12 months | $29.99 | per year |
| Astronomy guide - Sky atlas | $29.99 | per 3 months |
| 2 Month Subscription | $39.99 | per 2 months |
| 2 Months Subscription | $39.99 | per 2 months |
| Disable Ads Sale | $9.99 | one-time |
| Disable Ads | $19.99 | one-time |

**What reviewers like**

- 🌟 Informative and educational
- 🔍 Detailed solar system information
- 🎨 Cool visuals and graphics

**What reviewers complain about**

- 💰 Expensive subscription model
- 🔒 Difficult to cancel subscription
- 🤔 Misleading 'free' claims
- 🐛 Bugs and glitches
- 🤯 Confusing user interface

**Reported bugs**

- Planets displayed incorrectly
- Subscription charges without consent
- Inability to cancel subscription

**Requested features**

- More free content and features
- Realistic planet models and animations
- Expanded content beyond the solar system
- Improved accessibility and usability


### 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


## Frequently asked questions

### Is 3D Solar System free?

3D Solar System is free to download, with in-app purchases available.

### Is gravity detector free?

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

### Which has better reviews, 3D Solar System or gravity detector?

gravity detector is rated higher. 3D Solar System averages 4.4 out of 5 from 1.7K ratings, while gravity detector averages 5.0 from 4 ratings.

### Do 3D Solar System or gravity detector have ads?

3D Solar System shows ads; gravity detector does not.

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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.*