# 愛閱OnLine vs 天球模擬器

The clearest difference is update cadence: 天球模擬器 at every 3 days against 愛閱OnLine's fortnightly. 天球模擬器 also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

愛閱OnLine ships an update fortnightly, 天球模擬器 every 3 days. The most recent releases landed on October 3, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 愛閱OnLine | 天球模擬器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Size | 4 MB | 19 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHI EN LU](https://appshunter.io/developer/1551966578) | [Han-Chiang Chou](https://appshunter.io/developer/1883578938) |

## What reviewers say

### 愛閱OnLine

[App page](https://appshunter.io/ios/app/online/id1628753955)

**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 愛閱OnLine free?

愛閱OnLine is free to download, 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 愛閱OnLine or 天球模擬器 have ads?

Neither 愛閱OnLine nor 天球模擬器 shows ads.

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

愛閱OnLine ships an update fortnightly, and 天球模擬器 every 3 days. Most recently, 愛閱OnLine was updated on October 3, 2026 and 天球模擬器 on October 16, 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.*