# WordDeck vs 単語マスターX

The clearest difference is in-app purchases: 単語マスターX at none against WordDeck's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. WordDeck sells 2 in-app purchases, starting at $4.99 per month. 単語マスターX asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | WordDeck | 単語マスターX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 7 MB | 6 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社オポチュニティ](https://appshunter.io/developer/1740927723) | [SANWA Inc.](https://appshunter.io/developer/1878028373) |

## What reviewers say

### WordDeck

[App page](https://appshunter.io/ios/app/worddeck-smart-flashcards/id6759355699)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン（月額） | $4.99 | per month |
| プレミアムプラン（年額） | $29.99 | per year |


### 単語マスターX

[App page](https://appshunter.io/ios/app/x/id6760735471)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WordDeck free?

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

### Is 単語マスターX free?

単語マスターX is free to download, with no in-app purchases.

### Do WordDeck or 単語マスターX have ads?

Neither WordDeck nor 単語マスターX shows ads.

### Which is updated more often, WordDeck or 単語マスターX?

WordDeck ships an update every 2 weeks, and 単語マスターX every 2 weeks. Most recently, WordDeck was updated on October 5, 2026 and 単語マスターX on October 10, 2026.

---

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