# CapWords vs Polyidiom

The clearest difference is review sentiment: Polyidiom at 100% against CapWords's 72%. Polyidiom also leads on rating (5.0 vs 4.7). CapWords's advantage is ratings volume (607 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CapWords sells 6 in-app purchases, starting at $4.99 per month and Polyidiom sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Polyidiom holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: CapWords has 607 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 72% of CapWords's written reviews are positive against 100% of Polyidiom's.

CapWords ships an update every 5 days, Polyidiom every 3 days. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CapWords | Polyidiom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (607 ratings)](https://appshunter.io/ios/app/capwords-ai-language-tutor/id6738896465/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/polyidiom-learn-idiomslang/id6746371097/reviews)** |
| Number of ratings | **607** | 1 |
| Positive reviews | 72.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 265 MB | 43 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HappyPlan Tech](https://appshunter.io/developer/1631297811) | [亲强 吴](https://appshunter.io/developer/1700348139) |

## What reviewers say

### CapWords

[App page](https://appshunter.io/ios/app/capwords-ai-language-tutor/id6738896465)

Capture words from real life using your camera and instantly create smart flashcards. AI provides definitions with context, and a spaced repetition system helps you remember them. Perfect for students, travelers, and professionals looking to expand their vocabulary.

**Highlights:** AI text recognition from photos, AI-powered definitions with context, Photo-linked vocabulary flashcards, Intelligent spaced repetition review, Progress tracking, Offline word bank, Multiple language support

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium-Monthly-b | $4.99 | per month |
| Premium-Monthly | $5.99 | per month |
| Premium-Yearly | $19.99 | per year |
| Premium-Yearly | $29.99 | per year |
| Premium-Yearly-Promo | $29.99 | per year |
| Premium-Yearly-Promo-b | $29.99 | per year |

**What reviewers like**

- 👍 Simple and intuitive interface
- 🚀 Efficient flashcard creation
- 🔊 Helpful audio pronunciations
- 💡 Useful sample sentences

**What reviewers complain about**

- 🚫 Lack of support for certain languages (e.g., Hebrew, Arabic)
- 💡 Desire for dark mode option
- 🔒 Concerns about data privacy and Chinese ownership

**Reported bugs**

- Some website links not working properly

**Requested features**

- Add ability to import existing flashcards
- Integrate with other language learning apps
- Provide option to change native language
- Add home screen widgets
- Expand object description capabilities


### Polyidiom

[App page](https://appshunter.io/ios/app/polyidiom-learn-idiomslang/id6746371097)

Master idioms and slang across multiple languages with engaging illustrations and smart learning algorithms. Track your progress, save favorites, and explore cultural backgrounds. Offline access makes learning convenient anytime, anywhere.

**Highlights:** Card-based learning with definitions and history, Detailed explanations of cultural backgrounds, Save favorite idioms for review, Track learning progress and statistics, Support for six languages, Cartoon illustrations for enhanced memory, Offline learning support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PolyIdiom Premium (Monthly) | $1.99 | per month |
| PolyIdiom Premium (Yearly) | $7.99 | per year |
| Polyidiom Lifetime Membership | $9.99 | one-time |


## Frequently asked questions

### Is CapWords free?

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

### Is Polyidiom free?

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

### Which has better reviews, CapWords or Polyidiom?

Polyidiom is rated higher. CapWords averages 4.7 out of 5 from 607 ratings, while Polyidiom averages 5.0 from 1 ratings.

### Do CapWords or Polyidiom have ads?

Neither CapWords nor Polyidiom shows ads.

### Which is updated more often, CapWords or Polyidiom?

CapWords ships an update every 5 days, and Polyidiom every 3 days. Most recently, CapWords was updated on October 23, 2026 and Polyidiom on October 8, 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.*