# Solar System&Celestial Objects vs Heliosphere

The clearest difference is in-app purchases: Solar System&Celestial Objects at none against Heliosphere's 3. Solar System&Celestial Objects also leads on iOS requirement (12.0 vs 18.0). Heliosphere's advantage is ads (none vs shown) and update cadence (every 3 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. Heliosphere sells 3 one-off in-app purchases. Solar System&Celestial Objects asks for nothing beyond the download.

Solar System&Celestial Objects ships an update every 6 weeks, Heliosphere every 3 days. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Solar System&Celestial Objects | Heliosphere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/heliosphere-solar-system/id6757491622/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 62 MB | 36 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Vision Pro |
| Age rating | 4+ | 4+ |
| Developer | [NIKI TECH](https://appshunter.io/developer/1788609104) | [CHUNGKIL KIM](https://appshunter.io/developer/960187999) |

## What reviewers say

### Solar System&Celestial Objects

[App page](https://appshunter.io/ios/app/solar-system-and-celestial-objects/id6503188651)

**Features:** macOS Compatibility

**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 Solar System&Celestial Objects free?

Solar System&Celestial Objects is free to download, with no in-app purchases.

### Is Heliosphere free?

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

### Do Solar System&Celestial Objects or Heliosphere have ads?

Solar System&Celestial Objects shows ads; Heliosphere does not.

### Which is updated more often, Solar System&Celestial Objects or Heliosphere?

Solar System&Celestial Objects ships an update every 6 weeks, and Heliosphere every 3 days. Most recently, Solar System&Celestial Objects was updated on October 2, 2026 and Heliosphere on September 28, 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.*