# 覚える百人一首 vs ChemicalMemoryGame

The clearest difference is in-app purchases: ChemicalMemoryGame at none against 覚える百人一首's 1. ChemicalMemoryGame also leads on iOS requirement (15.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 覚える百人一首 sells 1 one-off in-app purchase. ChemicalMemoryGame asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 覚える百人一首 | ChemicalMemoryGame |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id1114602371/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 3 MB | 297 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yuki Hagiwara](https://appshunter.io/developer/1076129199) | [soichiro totoki](https://appshunter.io/developer/1755863943) |

## What reviewers say

### 覚える百人一首

[App page](https://appshunter.io/ios/app/id1114602371)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を表示しない | $1.99 | one-time |


### ChemicalMemoryGame

[App page](https://appshunter.io/ios/app/chemicalmemorygame/id6743126799)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 覚える百人一首 free?

覚える百人一首 is free to download, with in-app purchases available.

### Is ChemicalMemoryGame free?

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

### Do 覚える百人一首 or ChemicalMemoryGame have ads?

Both 覚える百人一首 and ChemicalMemoryGame show ads.

### Which is updated more often, 覚える百人一首 or ChemicalMemoryGame?

覚える百人一首 ships an update every 3 weeks, and ChemicalMemoryGame every 3 weeks. Most recently, 覚える百人一首 was updated on October 22, 2026 and ChemicalMemoryGame on October 30, 2026.

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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.*