# 99乘法大挑戰：九九乘法練習 vs 跑跑單字

The clearest difference is update cadence: 跑跑單字 at daily against 99乘法大挑戰：九九乘法練習's weekly. 跑跑單字 also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 99乘法大挑戰：九九乘法練習 sells 1 one-off in-app purchase and 跑跑單字 sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

99乘法大挑戰：九九乘法練習 ships an update weekly, 跑跑單字 daily. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | 99乘法大挑戰：九九乘法練習 | 跑跑單字 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Size | 126 MB | 91 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HSIHSUN HO](https://appshunter.io/developer/6774536504) | [Yi-Jou Su](https://appshunter.io/developer/6809726981) |

## What reviewers say

### 99乘法大挑戰：九九乘法練習

[App page](https://appshunter.io/ios/app/99/id6804374876)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完整乘法學習・一次買斷 | $2.99 | one-time |


### 跑跑單字

[App page](https://appshunter.io/ios/app/id6809726979)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 單字本月訂 | $1.99 | per month |
| 單字本終生版 | $2.99 | one-time |
| 單字本終生版＋ | $8.99 | one-time |


## Frequently asked questions

### Is 99乘法大挑戰：九九乘法練習 free?

99乘法大挑戰：九九乘法練習 is free to download, with in-app purchases available.

### Is 跑跑單字 free?

跑跑單字 is free to download, with in-app purchases available.

### Do 99乘法大挑戰：九九乘法練習 or 跑跑單字 have ads?

Neither 99乘法大挑戰：九九乘法練習 nor 跑跑單字 shows ads.

### Which is updated more often, 99乘法大挑戰：九九乘法練習 or 跑跑單字?

99乘法大挑戰：九九乘法練習 ships an update weekly, and 跑跑單字 daily. Most recently, 99乘法大挑戰：九九乘法練習 was updated on November 7, 2026 and 跑跑單字 on November 10, 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.*