Dutch by Nemo vs Codex4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dutch by Nemo
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.
- 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
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Turn your iPhone, iPad and Apple Watch into your FAVORITE teacher of Dutch. ◆ The most essential words and phrases of the language, each with native speaker audio. ◆ Master your accent with the Speech Studio. Simply record yourself saying a phrase and then hear your voice next to the teacher’s. You’ll be AMAZED how quickly your foreign accent melts away. ◆ All audio is downloaded to the device and accessible even in airplane mode or without expensive international roaming fees. ◆ Nemo is NOT BUILT AROUND LESSONS at all. It is meant to be picked up and put down throughout the day, whenever you have a few minutes to spare. ◆ Builds a foundation of Dutch empowering you to speak CONFIDENTLY in EVERYDAY CONVERSATIONS. ◆ NO PRIOR KNOWLEDGE of Dutch required. Nemo® is specially DESIGNED to tap the remarkable power of your mobile device, and your brain, to their fullest. PERSONALIZED FOR YOU Nemo is your personal trainer, tracking your PROGRESS across every single word and phrase. ◆ Practice Dutch the way you'll use it. Nemo is fully customizable. ◆ Nemo immerses you in the sounds of Dutch so you naturally speak with ease. ◆ Dive into WHAT YOU WANT to learn at any time. ◆ You control which words to practice – skip words you don’t want to learn or already know. ◆ Turn on Review Mode to study what you practiced earlier in the day to BOOST your memory retention. ◆ Hear English descriptions of all words, in a flashcard format. ◆ Quiz your mastery of the vocabulary. ◆ Nemo introduces words to you progressively to develop familiarity and reviews them at the right moment so they enter your LONG TERM MEMORY. TARGET THE MOST COMMON WORDS Maximize your time investment by targeting the most basic and high frequency words of the language. Upgrade to the complete version to: ◆ Get off the beaten path or find comfort with DIRECTIONS, TRAVEL and HOTEL phrases. ◆ Decode menus with the most common FOOD words. ◆ Shop and find bargains like an insider with must-know SHOPPING phrases. ◆ Learn words useful for your time in netherlands. ◆ Build your proficiency with the most important verbs and SENTENCE BUILDING BLOCKS in Dutch. ◆ Spark new friendships with COMPLIMENTS and CONVERSATION STARTERS. Use your new skills to make friends, impress old friends, bring smiles to children, get out of jams, experience new things, speak confidently, and make your travel and cultural experience more rich and fulfilling. Download this FREE app now! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Codex4
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.
- 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
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Get fluent faster by learning the words you actually use. Codex4 helps you build a usable vocabulary and keep it for the long term. - Learn what you need: Add your own words from any text in one tap. Build vocabulary for your job, studies, or hobbies. - Retain more with less effort: Reviews are timed by FSRS (a modern spaced-repetition model) so you study exactly when it counts. - Master real usage: The app treats each word as a lemma, so forms and conjugations are covered naturally as you progress. - Stay organized and motivated: Clear stats show what’s due, what’s known, and what’s next. - Bring any content: Automatic word extraction and a context-aware lemmatizer handle homonyms and multi-word phrases. - Your data stays yours: Keep access to review even after unsubscribing, and export your words and learning data anytime. - No gimmicks: Fast sessions, clean design, built for serious learners. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Dutch by Nemo | Codex4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (584 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 89.3% of reviews — better | 50.0% of reviews |
| Number of ratings | 584 — better | 2 |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 13 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Nemo Apps LLC | Jonas Richner |
Customer experience
Dutch by Nemo
Codex4
Bugs and requests
Dutch by Nemo
Reported bugs
3 issues- App not running on older devices
- Cannot install full app after purchase
- No response to help requests
Requested features
4 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Dutch by Nemo
- Nemo Dutch Foundation pack$14.99
Codex4
- Basic$12.991 Month
- Pro$14.001 Month
- Basic Yearly7 Days trial$69.991 Year
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- Pro Yearly3 Days trial$85.001 Year
Questions
Is Dutch by Nemo free?
Is Codex4 free?
Which has better reviews, Dutch by Nemo or Codex4?
Do Dutch by Nemo or Codex4 have ads?
Which is updated more often, Dutch by Nemo or Codex4?
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