# CrossMath vs Peng Doku!

CrossMath and Peng Doku! 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. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | CrossMath | Peng Doku! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Weekly | — |
| Size | 146 MB | 11 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Luong Phuc Thien](https://appshunter.io/developer/1893879592) | [燕梅 高](https://appshunter.io/developer/1860144880) |

## What reviewers say

### CrossMath

[App page](https://appshunter.io/ios/app/crossmath-dogdoku-puzzle/id6772078613)

**In-app purchases:** none


### Peng Doku!

[App page](https://appshunter.io/ios/app/peng-doku/id6788997162)

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

**In-app purchases:** none


## Frequently asked questions

### Is CrossMath free?

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

### Is Peng Doku! free?

Peng Doku! is free to download, with no in-app purchases.

### Do CrossMath or Peng Doku! have ads?

Both CrossMath and Peng Doku! show ads.

---

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