# せかいちずパズル vs Working Memory Lab

せかいちずパズル and Working Memory Lab 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 | せかいちずパズル | Working Memory Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 2 MB | 12 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Naoki Chiba](https://appshunter.io/developer/1895372512) | [Yuki Isaka](https://appshunter.io/developer/1891355296) |

## What reviewers say

### せかいちずパズル

[App page](https://appshunter.io/ios/app/id6790808380)

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

**In-app purchases:** none


### Working Memory Lab

[App page](https://appshunter.io/ios/app/working-memory-lab/id6807255014)

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

**In-app purchases:** none


## Frequently asked questions

### Is せかいちずパズル free?

せかいちずパズル is free to download, with no in-app purchases.

### Is Working Memory Lab free?

Working Memory Lab is free to download, with no in-app purchases.

### Do せかいちずパズル or Working Memory Lab have ads?

Neither せかいちずパズル nor Working Memory Lab 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.*