# World Words vs Cluedup.ai

The clearest difference is in-app purchases: Cluedup.ai at none against World Words's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. World Words sells 3 in-app purchases, starting at $0.99 per month. Cluedup.ai asks for nothing beyond the download.

World Words ships an update every 4 weeks, Cluedup.ai every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | World Words | Cluedup.ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/world-words/id1670569128/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 4 MB |
| Requires iOS | 15.3 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Uliana Gritchina](https://appshunter.io/developer/1619495556) | [Cluedup.ai](https://appshunter.io/developer/1787121497) |

## What reviewers say

### World Words

[App page](https://appshunter.io/ios/app/world-words/id1670569128)

Master foreign vocabulary with personalized flashcards and interactive tests. Contribute to a global learning community by sharing and discovering new words. Practice daily with home screen widgets.

**Highlights:** Create custom flashcards, Take knowledge consolidation tests, Learn words from a global community, Share vocabulary with others, Use home screen widgets for daily practice

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| World Words Premium | $0.99 | per month |
| World Words Premium Annual | $9.99 | per year |
| Add 100 cards | $0.69 | one-time |


### Cluedup.ai

[App page](https://appshunter.io/ios/app/cluedupai/id6739805701)

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is World Words free?

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

### Is Cluedup.ai free?

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

### Do World Words or Cluedup.ai have ads?

Neither World Words nor Cluedup.ai shows ads.

### Which is updated more often, World Words or Cluedup.ai?

World Words ships an update every 4 weeks, and Cluedup.ai every 3 weeks. Most recently, World Words was updated on October 23, 2026 and Cluedup.ai on October 25, 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.*