# 忠誠學府館 vs 九九星球：乘法大冒險

The clearest difference is in-app purchases: 忠誠學府館 at none against 九九星球：乘法大冒險's 1. 忠誠學府館 also leads on iOS requirement (15.0 vs 17.0). 九九星球：乘法大冒險's advantage is update cadence (daily vs every 35 months). On price, ads and device support there is nothing between them.

Both are free to download. 九九星球：乘法大冒險 sells 1 one-off in-app purchase. 忠誠學府館 asks for nothing beyond the download.

忠誠學府館 ships an update every 35 months, 九九星球：乘法大冒險 daily. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 忠誠學府館 | 九九星球：乘法大冒險 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Daily** |
| Size | 196 MB | 88 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Chi Hsien Lai](https://appshunter.io/developer/1039759515) | [HSIHSUN HO](https://appshunter.io/developer/6774536504) |

## What reviewers say

### 忠誠學府館

[App page](https://appshunter.io/ios/app/id6472026726)

**Features:** macOS Compatibility

**In-app purchases:** none


### 九九星球：乘法大冒險

[App page](https://appshunter.io/ios/app/id6812527599)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解鎖全部乘法題庫 | $1.99 | one-time |


## Frequently asked questions

### Is 忠誠學府館 free?

忠誠學府館 is free to download, with no in-app purchases.

### Is 九九星球：乘法大冒險 free?

九九星球：乘法大冒險 is free to download, with in-app purchases available.

### Do 忠誠學府館 or 九九星球：乘法大冒險 have ads?

Neither 忠誠學府館 nor 九九星球：乘法大冒險 shows ads.

### Which is updated more often, 忠誠學府館 or 九九星球：乘法大冒險?

忠誠學府館 ships an update every 35 months, and 九九星球：乘法大冒險 daily. Most recently, 忠誠學府館 was updated on October 30, 2026 and 九九星球：乘法大冒險 on October 29, 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.*