# Card Master vs wordDNA：词根词缀字典

The clearest difference is in-app purchases: Card Master at none against wordDNA：词根词缀字典's 3. Card Master also leads on ads (none vs shown). wordDNA：词根词缀字典's advantage is update cadence (every 6 days vs every 3 weeks) and ratings volume (4 vs 1). On price, rating, device support and iOS requirement there is nothing between them.

Both are free to download. wordDNA：词根词缀字典 sells 3 in-app purchases, starting at $2.99 per month. Card Master asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Card Master against 5.0 for wordDNA：词根词缀字典. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Card Master ships an update every 3 weeks, wordDNA：词根词缀字典 every 6 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Card Master | wordDNA：词根词缀字典 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/card-master/id6739202007/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/worddna/id6769062051/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | **Free** | Freemium |
| Size | 22 MB | 264 MB |
| Requires iOS | **16.0** | 17.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [秀娟 牛](https://appshunter.io/developer/1094634955) | [峰 潘](https://appshunter.io/developer/1823196275) |

## What reviewers say

### Card Master

[App page](https://appshunter.io/ios/app/card-master/id6739202007)

This intelligent learning assistant uses a scientific memory algorithm based on the forgetting curve model to schedule personalized review sessions. It supports rich media notes, LaTeX, and code blocks, making it ideal for students, language learners, and professionals.

**Highlights:** Scientific memory algorithm (SM2), Personalized review scheduling, Import Anki files (.apkg), Multi-dimensional note management, Rich media support (images, audio, video), LaTeX equation editor, Code highlighting

**Features:** macOS Compatibility

**In-app purchases:** none


### wordDNA：词根词缀字典

[App page](https://appshunter.io/ios/app/worddna/id6769062051)

This app helps users understand English vocabulary by breaking down words into their roots, prefixes, and suffixes. It provides bilingual explanations, pronunciation, and usage examples, with offline access and basic learning tools included for free. Advanced features and content are available through an optional subscription.

**Highlights:** Bilingual word explanations, Etymology, roots, prefixes, suffixes, Pronunciation and usage examples, Offline dictionary lookup, Favorites and saved words, Basic quiz and review tools

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenEtymology Plus Monthly | $2.99 | per month |
| OpenEtymology Plus Yearly | $17.99 | per year |
| OpenEtymology Plus Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Card Master free?

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

### Is wordDNA：词根词缀字典 free?

wordDNA：词根词缀字典 is free to download, with in-app purchases available.

### Which has better reviews, Card Master or wordDNA：词根词缀字典?

Card Master and wordDNA：词根词缀字典 are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do Card Master or wordDNA：词根词缀字典 have ads?

wordDNA：词根词缀字典 shows ads; Card Master does not.

### Which is updated more often, Card Master or wordDNA：词根词缀字典?

Card Master ships an update every 3 weeks, and wordDNA：词根词缀字典 every 6 days. Most recently, Card Master was updated on October 5, 2026 and wordDNA：词根词缀字典 on October 7, 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.*