# 3D Solar System vs Discover Mars

The clearest difference is review sentiment: Discover Mars at 100% against 3D Solar System's 29%. Discover Mars also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 10). 3D Solar System's advantage is ratings volume (1.7K vs 12) and update cadence (fortnightly vs monthly). On price and device support there is nothing between them.

Both are free to download. 3D Solar System sells 10 in-app purchases, starting at $9.99 per month. Discover Mars asks for nothing beyond the download.

Discover Mars 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 12, so its average is the more settled of the two. Written reviews point the same way: 29% of 3D Solar System's written reviews are positive against 100% of Discover Mars's.

3D Solar System ships an update fortnightly, Discover Mars monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 3D Solar System | Discover Mars |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (1.7K ratings)](https://appshunter.io/ios/app/3d-solar-system-planets-view/id983877380/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/discover-mars/id1550710909/reviews)** |
| Number of ratings | **1.7K** | 12 |
| Positive reviews | 28.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 352 MB | 8 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Education Terra](https://appshunter.io/developer/946819038) | [Manthan B Thakkar](https://appshunter.io/developer/1550710911) |

## What reviewers say

### 3D Solar System

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

Explore our solar system in 3D and augmented reality. Learn about planets, moons, constellations, and stars with interactive maps and engaging quizzes. Create your own planets with AI.

**Highlights:** 3D and AR Solar System exploration, Interactive star map with gyroscope support, Detailed information on planets, moons, and constellations, Knowledge-testing quizzes and challenges, AI-powered planet creation, Constellation lore and astronomy facts

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month PRO | $9.99 | per month |
| 1 month Sale | $10.99 | per month |
| 12 months sale | $14.99 | per year |
| 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


### 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


## Frequently asked questions

### Is 3D Solar System free?

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

### Is Discover Mars free?

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

### Which has better reviews, 3D Solar System or Discover Mars?

Discover Mars is rated higher. 3D Solar System averages 4.4 out of 5 from 1.7K ratings, while Discover Mars averages 5.0 from 12 ratings.

### Do 3D Solar System or Discover Mars have ads?

3D Solar System shows ads; Discover Mars does not.

### Which is updated more often, 3D Solar System or Discover Mars?

3D Solar System ships an update fortnightly, and Discover Mars monthly. Most recently, 3D Solar System was updated on November 6, 2026 and Discover Mars on November 3, 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.*