# SolarSystem vs Heliosphere

The clearest difference is in-app purchases: SolarSystem at none against Heliosphere's 3. SolarSystem also leads on iOS requirement (9.0 vs 18.0). Heliosphere's advantage is update cadence (every 3 days vs monthly). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Heliosphere sells 3 one-off in-app purchases. SolarSystem asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.0 for SolarSystem against 3.0 for Heliosphere. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

SolarSystem ships an update monthly, Heliosphere every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | SolarSystem | Heliosphere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/solarsystem/id1465214287/reviews) | [3.0 (2 ratings)](https://appshunter.io/ios/app/heliosphere-solar-system/id6757491622/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free | Free |
| Size | 89 MB | 37 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [Hologram Co.,Ltd.](https://appshunter.io/developer/1142940135) | [CHUNGKIL KIM](https://appshunter.io/developer/960187999) |

## What reviewers say

### SolarSystem

[App page](https://appshunter.io/ios/app/solarsystem/id1465214287)

Explore the solar system through immersive MR, VR, and AR experiences. Adjust settings for your device and preferred viewing mode to learn about planets and space.

**Highlights:** Mixed Reality (MR) mode, Virtual Reality (VR) mode, Augmented Reality (AR) mode, Adjustable screen size, Single eye/Dual eye mode, Inter-pupillary distance correction

**In-app purchases:** none


### Heliosphere

[App page](https://appshunter.io/ios/app/heliosphere-solar-system/id6757491622)

Explore a real-time 3D simulation of the solar system, planets, moons, and spacecraft using accurate astronomical data. Learn about celestial bodies and space missions with educational content and quizzes.

**Highlights:** Real-time 3D solar system simulation, Live spacecraft tracking, Deep sky exploration, Comprehensive astronomy education, Time travel from 1900 to 2100, Planet-centric viewing mode

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Coffee | $2.99 | one-time |
| 3 Coffees | $8.99 | one-time |
| 5 Coffees | $14.99 | one-time |


## Frequently asked questions

### Is SolarSystem free?

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

### Is Heliosphere free?

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

### Which has better reviews, SolarSystem or Heliosphere?

SolarSystem and Heliosphere are both rated 3.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do SolarSystem or Heliosphere have ads?

Neither SolarSystem nor Heliosphere shows ads.

### Which is updated more often, SolarSystem or Heliosphere?

SolarSystem ships an update monthly, and Heliosphere every 3 days. Most recently, SolarSystem was updated on October 24, 2026 and Heliosphere on October 24, 2026.

---

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