# Hubble vs 天球模擬器

The clearest difference is price: 天球模擬器 at Free against Hubble's $0.99. 天球模擬器 also leads on update cadence (every 3 days vs every 9 months) and iOS requirement (13.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

天球模擬器 is free to download; Hubble costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hubble ships an update every 9 months, 天球模擬器 every 3 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Hubble | 天球模擬器 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 days** |
| Size | 1.7 GB | 19 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Alparslan Topbas](https://appshunter.io/developer/1130875171) | [Han-Chiang Chou](https://appshunter.io/developer/1883578938) |

## What reviewers say

### Hubble

[App page](https://appshunter.io/ios/app/hubble-deep-space-pro/id1579382668)

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

**In-app purchases:** none


### 天球模擬器

[App page](https://appshunter.io/ios/app/id6760458030)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hubble free?

Hubble costs $0.99, with no in-app purchases.

### Is 天球模擬器 free?

天球模擬器 is free to download, with no in-app purchases.

### Do Hubble or 天球模擬器 have ads?

Neither Hubble nor 天球模擬器 shows ads.

### Which is updated more often, Hubble or 天球模擬器?

Hubble ships an update every 9 months, and 天球模擬器 every 3 days. Most recently, Hubble was updated on October 30, 2026 and 天球模擬器 on October 25, 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.*