# 墨靈 vs 99乘法大挑戰：九九乘法練習

The clearest difference is iOS requirement: 墨靈 at 13.0 against 99乘法大挑戰：九九乘法練習's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 墨靈 sells 2 in-app purchases, starting at $2.99 per month and 99乘法大挑戰：九九乘法練習 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 墨靈 | 99乘法大挑戰：九九乘法練習 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 128 MB | 118 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jerry Chang](https://appshunter.io/developer/1896487954) | [HSIHSUN HO](https://appshunter.io/developer/6774536504) |

## What reviewers say

### 墨靈

[App page](https://appshunter.io/ios/app/id6788177382)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 墨靈會員(月) | $2.99 | per month |
| 墨靈會員(年) | $29.99 | per year |


### 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 | $4.99 | one-time |


## Frequently asked questions

### Is 墨靈 free?

墨靈 is free to download, with in-app purchases available.

### 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.

### Do 墨靈 or 99乘法大挑戰：九九乘法練習 have ads?

Neither 墨靈 nor 99乘法大挑戰：九九乘法練習 shows ads.

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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.*