# 美數學院 vs 蕭博士SoR美語

The clearest difference is update cadence: 蕭博士SoR美語 at every 10 days against 美數學院's every 18 months. 蕭博士SoR美語 also leads on device support. On price, 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.

美數學院 ships an update every 18 months, 蕭博士SoR美語 every 10 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 美數學院 | 蕭博士SoR美語 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 18 months | **Every 10 days** |
| Size | 196 MB | 72 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Chi Hsien Lai](https://appshunter.io/developer/1039759515) | [臺灣雙母語學殿股份有限公司](https://appshunter.io/developer/1877821943) |

## What reviewers say

### 美數學院

[App page](https://appshunter.io/ios/app/id6472878595)

**In-app purchases:** none


### 蕭博士SoR美語

[App page](https://appshunter.io/ios/app/sor/id6759275270)

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

**In-app purchases:** none


## Frequently asked questions

### Is 美數學院 free?

美數學院 is free to download, with no in-app purchases.

### Is 蕭博士SoR美語 free?

蕭博士SoR美語 is free to download, with no in-app purchases.

### Which is updated more often, 美數學院 or 蕭博士SoR美語?

美數學院 ships an update every 18 months, and 蕭博士SoR美語 every 10 days. Most recently, 美數學院 was updated on November 4, 2026 and 蕭博士SoR美語 on October 31, 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.*