# 天球模擬器 vs 英文開口說

The clearest difference is update cadence: 天球模擬器 at every 3 days against 英文開口說's fortnightly. 天球模擬器 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

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

天球模擬器 ships an update every 3 days, 英文開口說 fortnightly. Both last shipped on November 9, 2026.

## The numbers

| Metric | 天球模擬器 | 英文開口說 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Size | 19 MB | 66 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Han-Chiang Chou](https://appshunter.io/developer/1883578938) | [CMoney](https://appshunter.io/developer/503431064) |

## What reviewers say

### 天球模擬器

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 英文開口說

[App page](https://appshunter.io/ios/app/fsi-ai/id6766173940)

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

**In-app purchases:** none


## Frequently asked questions

### Is 天球模擬器 free?

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

### Is 英文開口說 free?

英文開口說 is free to download, with no in-app purchases.

### Do 天球模擬器 or 英文開口說 have ads?

Neither 天球模擬器 nor 英文開口說 shows ads.

### Which is updated more often, 天球模擬器 or 英文開口說?

天球模擬器 ships an update every 3 days, and 英文開口說 fortnightly. Most recently, 天球模擬器 was updated on November 9, 2026 and 英文開口說 on November 9, 2026.

---

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