# Dutch by Nemo vs Codex4

The clearest difference is review sentiment: Dutch by Nemo at 89% against Codex4's 50%. Dutch by Nemo also leads on ratings volume (584 vs 2). Codex4's advantage is update cadence (every 4 days vs every 4 months) and rating (5.0 vs 4.7). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Dutch by Nemo sells 1 one-off in-app purchase and Codex4 sells 4 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Codex4 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Dutch by Nemo has 584 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 89% of Dutch by Nemo's written reviews are positive against 50% of Codex4's, so the app with the better star average is not the one people write more warmly about.

Dutch by Nemo ships an update every 4 months, Codex4 every 4 days. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Dutch by Nemo | Codex4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (584 ratings)](https://appshunter.io/ios/app/dutch-by-nemo/id635602420/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/codex4-for-serious-study/id6743228019/reviews)** |
| Number of ratings | **584** | 2 |
| Positive reviews | **89.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 13 MB | 52 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nemo Apps LLC](https://appshunter.io/developer/428814324) | [Jonas Richner](https://appshunter.io/developer/1801973188) |

## What reviewers say

### Dutch by Nemo

[App page](https://appshunter.io/ios/app/dutch-by-nemo/id635602420)

Learn Dutch with native speaker audio and pronunciation practice. This app focuses on essential words and phrases for everyday conversations, allowing you to learn at your own pace without formal lessons. It tracks your progress and offers customizable review modes to boost memory retention.

**Highlights:** Native speaker audio, Speech Studio for pronunciation practice, Offline access to all audio, Customizable learning path, Progress tracking, Review mode for memory retention, Flashcard format with English descriptions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nemo Dutch Foundation pack | $14.99 | one-time |

**What reviewers like**

- 👍 Effective for learning Dutch
- 👍 Good for reviewing words/phrases
- 👍 Spaced repetition is effective
- 👍 Ability to hear pronunciation
- 👍 Easy and fun to use

**What reviewers complain about**

- 💰 Expensive full version
- 💰 Limited free content
- 📉 Lack of advanced content

**Reported bugs**

- App not running on older devices
- Cannot install full app after purchase
- No response to help requests

**Requested features**

- Add typing aspect for spelling
- More free packs to try
- Need a follow-up for advanced learners
- Buddy to practice with (preferably Dutch speaker)


### Codex4

[App page](https://appshunter.io/ios/app/codex4-for-serious-study/id6743228019)

Build a usable vocabulary for your job, studies, or hobbies with smart, spaced repetition reviews. Master real word usage and track your progress with clear statistics. Designed for serious learners with a clean interface and no gimmicks.

**Highlights:** Add custom words from any text, Spaced repetition reviews (FSRS), Master word lemmas and conjugations, Clear progress statistics, Automatic word extraction, Data export and offline access

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $12.99 | per month |
| Pro | $14.00 | per month |
| Basic Yearly | $69.99 | per year |
| Pro Yearly | $85.00 | per year |


## Frequently asked questions

### Is Dutch by Nemo free?

Dutch by Nemo is free to download, with in-app purchases available.

### Is Codex4 free?

Codex4 is free to download, with in-app purchases available.

### Which has better reviews, Dutch by Nemo or Codex4?

Codex4 is rated higher. Dutch by Nemo averages 4.7 out of 5 from 584 ratings, while Codex4 averages 5.0 from 2 ratings.

### Do Dutch by Nemo or Codex4 have ads?

Neither Dutch by Nemo nor Codex4 shows ads.

### Which is updated more often, Dutch by Nemo or Codex4?

Dutch by Nemo ships an update every 4 months, and Codex4 every 4 days. Most recently, Dutch by Nemo was updated on October 10, 2026 and Codex4 on October 4, 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.*