# Grade 9 Math Mastery vs Peras

Grade 9 Math Mastery and Peras are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Grade 9 Math Mastery sells 2 in-app purchases, starting at $4.99 per month and Peras sells 1 in-app purchase, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Grade 9 Math Mastery | Peras |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 7 MB | 17 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Eager.app](https://appshunter.io/developer/1550371160) | [Emergent System LLC](https://appshunter.io/developer/6803193054) |

## 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 |


### Peras

[App page](https://appshunter.io/ios/app/peras/id6803193052)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peras Premium | $7.99 | per month |


## Frequently asked questions

### Is Grade 9 Math Mastery free?

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

### Is Peras free?

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

### Do Grade 9 Math Mastery or Peras have ads?

Neither Grade 9 Math Mastery nor Peras 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.*