# Grade 9 Math Mastery vs Knowledge Path

The clearest difference is in-app purchases: Knowledge Path at none against Grade 9 Math Mastery's 2. Knowledge Path also leads on update cadence (monthly vs every 5 months) and iOS requirement (15.1 vs 17.0). Grade 9 Math Mastery's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Grade 9 Math Mastery sells 2 in-app purchases, starting at $4.99 per month. Knowledge Path asks for nothing beyond the download.

Grade 9 Math Mastery ships an update every 5 months, Knowledge Path monthly. The most recent releases landed on September 29, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Grade 9 Math Mastery | Knowledge Path |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Size | 7 MB | 21 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eager.app](https://appshunter.io/developer/1550371160) | [SY KHANH HO](https://appshunter.io/developer/1851698856) |

## What reviewers say

### Grade 9 Math Mastery

[App page](https://appshunter.io/ios/app/grade-9-math-mastery/id6760619466)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grade 9 Math Mastery — Monthly | $4.99 | per month |
| Grade 9 Math Mastery — Annual | $29.99 | per year |


### Knowledge Path

[App page](https://appshunter.io/ios/app/knowledge-path/id6790034506)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grade 9 Math Mastery free?

Grade 9 Math Mastery is free to download, with in-app purchases available.

### Is Knowledge Path free?

Knowledge Path is free to download, with no in-app purchases.

### Do Grade 9 Math Mastery or Knowledge Path have ads?

Knowledge Path shows ads; Grade 9 Math Mastery does not.

### Which is updated more often, Grade 9 Math Mastery or Knowledge Path?

Grade 9 Math Mastery ships an update every 5 months, and Knowledge Path monthly. Most recently, Grade 9 Math Mastery was updated on September 29, 2026 and Knowledge Path on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*