# CapWords vs PolyEcho

The clearest difference is iOS requirement: PolyEcho at 13.0 against CapWords's 17.0. 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 PolyEcho sells 4 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | CapWords | PolyEcho |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (545 ratings)](https://appshunter.io/ios/app/capwords-ai-language-tutor/id6738896465/reviews)** | — |
| Number of ratings | **545** | — |
| Positive reviews | 71.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 235 MB | 207 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HappyPlan Tech](https://appshunter.io/developer/1631297811) | [楷博 尚](https://appshunter.io/developer/1801785390) |

## 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


### PolyEcho

[App page](https://appshunter.io/ios/app/polyecho/id6743313316)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $12.99 | per month |
| Semi-Annual Subscription | $59.99 | per 6 months |
| Annual Subscription | $99.99 | per year |
| 5-Time Conversation Credit | $2.99 | one-time |


## Frequently asked questions

### Is CapWords free?

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

### Is PolyEcho free?

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

### Do CapWords or PolyEcho have ads?

Neither CapWords nor PolyEcho shows ads.

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

CapWords ships an update every 5 days, and PolyEcho every 5 days. Most recently, CapWords was updated on October 13, 2026 and PolyEcho on September 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.*