ІКstudieren vs Codex4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ІКstudieren
Practice German with an AI tutor that offers personalized lessons, instant answers, and interactive exercises. Learn through a vast phrase library, engaging topics, and stress-free grammar modules. Improve pronunciation with native speaker audio.
- AI personal teacher
- 5000+ phrases
- 100 topics of sentences
- Interactive grammar lessons
- Native speaker pronunciation
- Levels A1-C1
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Artificial Intelligence — Your Personal Teacher: Imagine having a virtual tutor always ready to help! Communicate with our AI teacher in German, ask questions, and get instant answers. This intelligent assistant adapts to your learning style and progress, offering personalized exercises and recommendations. With it, you can practice speaking anytime and anywhere! Prototype Language Learning System: Using modern teaching methods, our app ensures fast learning at any age. The prototype system allows you to learn a language through active practice and interaction, making the learning process both effective and fun. You'll be engaged in learning with interactive tasks that stimulate your memory and creativity. 5000+ Phrases: Dive into a vast library of phrases covering all aspects of everyday life. From simple greetings to complex conversations — you'll always be ready to communicate! 100 Topics of Sentences and Questions: Learn the language through interesting topics! Each topic contains practical sentences and questions to help you express your thoughts confidently. Grammar Without Stress: Forget about boring rules! Our interactive grammar lessons make learning easy and clear. You'll quickly master the basics and be able to use them in practice. Words with Ukrainian Translations and Visualization: Each new word is accompanied by bright illustrations and Ukrainian translations. This not only makes memorization easier but also adds fun to the learning process! Pronunciation by Native Speakers: Listen to the correct pronunciation of words by native speakers! This will help you improve your listening and speaking skills. Levels from A1 to C1: Whether you're a beginner or already have basic knowledge, our app adapts to your level. You'll gradually move on to more complex constructions. With our app, you're not just learning words — you're unlocking a world of new possibilities! Join us and become part of an exciting journey into the world of the German language. Ready? Let's get started together!
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 update cadence: Codex4 at every 4 days against ІКstudieren's every 2 weeks. Codex4 also leads on rating (5.0 vs 4.8). ІКstudieren's advantage is ratings volume (28 vs 2) and review sentiment (63% vs 50%). 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. ІКstudieren sells 4 in-app purchases, starting at $8.99 per month 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 4.8. That said, the two scores are not equally well evidenced: ІКstudieren has 28 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 63% of ІКstudieren'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.
ІКstudieren ships an update every 2 weeks, Codex4 every 4 days. The most recent releases landed on September 30, 2026 and September 17, 2026 respectively.
| Parameter | ІКstudieren | Codex4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (28 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 63.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 28 — better | 2 |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 28 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | IHOR VLADISLAVOVIC KOLESNYKOV | Jonas Richner |
Customer experience
ІКstudieren
Codex4
In-app purchases
ІКstudieren
- Starter Pass (1 month)3 Days trial$8.991 Month
- Smart Learner (3 months)3 Days trial$12.993 Months
- Pro Master (6 months)3 Days trial$24.996 Months
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- Ultimate Fluency (12 months)7 Days trial$44.991 Year
Codex4
- Basic$12.991 Month
- Pro$14.001 Month
- Basic Yearly7 Days trial$69.991 Year
Show 1 moreShow fewer
- Pro Yearly3 Days trial$85.001 Year
Questions
Is ІКstudieren free?
Is Codex4 free?
Which has better reviews, ІКstudieren or Codex4?
Do ІКstudieren or Codex4 have ads?
Which is updated more often, ІКstudieren or Codex4?
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