# Math Orbs vs 99乘法大挑戰：九九乘法練習

The clearest difference is price: 99乘法大挑戰：九九乘法練習 at Free against Math Orbs's $0.99. Math Orbs's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 17.0). On update cadence, ads and device support there is nothing between them.

99乘法大挑戰：九九乘法練習 is free to download; Math Orbs costs $0.99 up front. 99乘法大挑戰：九九乘法練習 sells 1 one-off in-app purchase. Math Orbs asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Math Orbs | 99乘法大挑戰：九九乘法練習 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/math-orbs/id6475911131/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Paid | — |
| Size | 72 MB | 118 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Knowledge Vortex, LLC](https://appshunter.io/developer/1725396723) | [HSIHSUN HO](https://appshunter.io/developer/6774536504) |

## What reviewers say

### Math Orbs

[App page](https://appshunter.io/ios/app/math-orbs/id6475911131)

This app offers Grade 1-6 algebra practice for children, allowing parents to track progress and identify areas of difficulty. It features interactive quests, collectible orbs, and a virtual scratchpad for calculations, making learning engaging and eliminating the need for workbooks.

**Highlights:** Grade 1-6 algebra practice, Parental progress tracking, Identify areas of struggle, Interactive quests, Collectible orbs, Virtual scratchpad

**Features:** Vision Pro support

**In-app purchases:** none


### 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 Math Orbs free?

Math Orbs costs $0.99, with no in-app purchases.

### 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 Math Orbs or 99乘法大挑戰：九九乘法練習 have ads?

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

### Which is updated more often, Math Orbs or 99乘法大挑戰：九九乘法練習?

Math Orbs ships an update weekly, and 99乘法大挑戰：九九乘法練習 weekly. Most recently, Math Orbs was updated on October 2, 2026 and 99乘法大挑戰：九九乘法練習 on October 14, 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.*