# 3D Solar System vs Space 4D+

The clearest difference is rating: 3D Solar System at 4.4 against Space 4D+'s 3.4. 3D Solar System also leads on update cadence (fortnightly vs every 2 months) and ratings volume (1.7K vs 46). Space 4D+'s advantage is in-app purchases (none vs 12) and ads (none vs shown). 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. Space 4D+ asks for nothing beyond the download.

3D Solar System holds the better App Store score, 4.4 against 3.4. That said, the two scores are not equally well evidenced: 3D Solar System has 1.7K ratings behind it against 46, so its average is the more settled of the two. Written reviews complicate that: 29% of 3D Solar System's written reviews are positive against 37% of Space 4D+'s, so the app with the better star average is not the one people write more warmly about.

3D Solar System ships an update fortnightly, Space 4D+ every 2 months. The most recent releases landed on September 22, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | 3D Solar System | Space 4D+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.7K ratings)](https://appshunter.io/ios/app/3d-solar-system-planets-view/id983877380/reviews)** | [3.4 (46 ratings)](https://appshunter.io/ios/app/space-4d-plus/id1018109847/reviews) |
| Number of ratings | **1.7K** | 46 |
| Positive reviews | 28.6% of reviews | **36.8% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 347 MB | 300 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Education Terra](https://appshunter.io/developer/946819038) | [Octagon Studio Ltd](https://appshunter.io/developer/998405180) |

## 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 | $29.99 | 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


### Space 4D+

[App page](https://appshunter.io/ios/app/space-4d-plus/id1018109847)

Explore the wonders of space with augmented reality flashcards. This app brings planets, satellites, and space missions to life with interactive 3D models and informative facts. Experience space like never before, engaging for both children and adults.

**Highlights:** Augmented reality space exploration, Interactive 3D models of celestial bodies, Informative facts about planets and missions, Engaging for all ages, Scans printed space cards

**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 Space 4D+ free?

Space 4D+ is free to download, with no in-app purchases.

### Which has better reviews, 3D Solar System or Space 4D+?

3D Solar System is rated higher. 3D Solar System averages 4.4 out of 5 from 1.7K ratings, while Space 4D+ averages 3.4 from 46 ratings.

### Do 3D Solar System or Space 4D+ have ads?

3D Solar System shows ads; Space 4D+ does not.

### Which is updated more often, 3D Solar System or Space 4D+?

3D Solar System ships an update fortnightly, and Space 4D+ every 2 months. Most recently, 3D Solar System was updated on September 22, 2026 and Space 4D+ on June 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*