# Heliosphere vs Planet

The clearest difference is in-app purchases: Planet at none against Heliosphere's 3. Heliosphere's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

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

Heliosphere ships an update every 3 days, Planet weekly. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Heliosphere | Planet |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free | — |
| Size | 37 MB | 25 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [CHUNGKIL KIM](https://appshunter.io/developer/960187999) | [Ahmad khaled Samim](https://appshunter.io/developer/6780888534) |

## What reviewers say

### 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 |


### Planet

[App page](https://appshunter.io/ios/app/planet-solar-system/id6790789495)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Heliosphere free?

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

### Is Planet free?

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

### Do Heliosphere or Planet have ads?

Neither Heliosphere nor Planet shows ads.

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

Heliosphere ships an update every 3 days, and Planet weekly. Most recently, Heliosphere was updated on October 24, 2026 and Planet on October 20, 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.*