# PolyDigits vs MathChirp

The clearest difference is in-app purchases: MathChirp at none against PolyDigits's 4. MathChirp also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26). PolyDigits's advantage is ads (none vs shown). On price there is nothing between them.

Both are free to download. PolyDigits sells 4 in-app purchases, starting at $1.99 per month. MathChirp asks for nothing beyond the download.

## The numbers

| Metric | PolyDigits | MathChirp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | — |
| Size | 4 MB | 22 MB |
| Requires iOS | 26 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Kwetschas](https://appshunter.io/developer/1823422072) | [nguyen van sang](https://appshunter.io/developer/1575122979) |

## What reviewers say

### PolyDigits

[App page](https://appshunter.io/ios/app/polydigits/id6747923329)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee Subscription | $1.99 | per month |
| Small Coffee | $2.99 | one-time |
| Medium Coffee | $3.99 | one-time |
| Large Coffee | $5.99 | one-time |


### MathChirp

[App page](https://appshunter.io/ios/app/mathchirp-ai-math-practice/id6799354516)

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

**In-app purchases:** none


## Frequently asked questions

### Is PolyDigits free?

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

### Is MathChirp free?

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

### Do PolyDigits or MathChirp have ads?

MathChirp shows ads; PolyDigits does not.

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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.*