Todaii vs Codex4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Todaii
Master German from A1 to C1 with this comprehensive app. It offers AI-powered reading and speaking practice, listening exercises with transcripts, a vast vocabulary builder, an integrated dictionary, and Goethe exam preparation.
- AI-powered speaking practice
- Reading comprehension with lookup
- Listening practice with transcripts
- Vocabulary builder and games
- Integrated German dictionary
- Goethe A1-C1 mock tests
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Learn German faster with real German reading content, an AI conversation partner, and Goethe & Telc mock tests - all built around the CEFR levels from A1 to C1. Todaii German turns everyday German content into bite-sized lessons you can finish in just 10 minutes a day. Read smarter, speak with confidence, and walk into your exam ready. WHY Todaii German? • Our language experts create German reading content from A1 to C1 levels, with one-tap lookup and a quiz built right into every reading lesson. • Todaii is your companion for reading, listening, AI speaking practice, vocabulary flashcards, and full Goethe & Telc exam prep — all in one app. Start learning German in a new way with Todaii. ====== WHAT LEVELS CAN I LEARN? You can learn German from A1 (absolute beginner) through A2, B1, B2 up to C1 (advanced), with reading content, listening material, and exam prep matched to each CEFR level. ====== Why learning with real Deutsch content works: ► REAL GERMAN READING, NOT TEXTBOOK DRILLS Articles curated by level — A1 through C1 — across culture, technology, business, and everyday German life. Tap any word for instant lookup with meaning, native audio, and example sentences. A short reading quiz at the end locks the new vocabulary in. ► GOETHE & TELC EXAM PREP Full mock tests from A1 through C1, with detailed answer explanations so you understand why — not just what. Walk into the real Goethe or Telc exam knowing exactly what to expect. ► SPEAK GERMAN 1:1 WITH AN AI TUTOR Hold real conversations in German on topics you'd actually talk about. Get instant feedback on grammar and pronunciation, suggestions for better phrasing, and a score you can track over time. It's the kind of speaking practice a textbook can't give you. ► TRAIN YOUR LISTENING WITH NATIVE AUDIO Every article comes with high-quality native German audio. Trending podcasts and videos include full transcripts, with playback speed you can adjust to match your listening level — slow it down to catch every word, speed it up as your ear improves. ► VOCABULARY THAT STICKS General word lists for everyday Deutsch, plus specialist vocabulary sets for nursing, hospitality, retail, and customer service. Flashcards, matching games, and sentence-building exercises move new words into long-term memory. ► INSTANT GERMAN DICTIONARY AI-assisted lookup for words, phrases, and grammar. See real example sentences and visual cues that make new German vocabulary easier to remember and easier to use in real conversations. ====== WHO IT'S FOR • Self-learners working toward A1, B1, or C1 fluency • Students preparing for Goethe or Telc certification • Anyone who wants to read, listen, and speak German — not just memorize • Busy learners with ten minutes a day and a real goal Start small. Stay consistent. Todaii is the German learning companion you'll come back to. Questions or feedback? Reach us at todai.easylife@gmail.com — your input drives every update. Privacy: https://todaiinews.com/en/policy Terms: https://todaiinews.com/en/terms
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: Todaii at 88% against Codex4's 50%. Todaii also leads on ratings volume (91 vs 2). Codex4's advantage is ads (none vs shown) and update cadence (every 4 days vs fortnightly). On price, in-app purchases, monetization model and device support 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. Todaii sells 19 in-app purchases, starting at $5.39 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: Todaii has 91 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 88% of Todaii'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.
Todaii ships an update fortnightly, Codex4 every 4 days. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.
| Parameter | Todaii | Codex4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (91 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 87.8% of reviews — better | 50.0% of reviews |
| Number of ratings | 91 — better | 2 |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15 — better | 15.6 |
| Further details — not scored | ||
| Size | 224 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Ghi Nguyen | Jonas Richner |
Customer experience
Todaii
Codex4
In-app purchases
Todaii
- Discovery version: 1 month$5.391 Month
- Discovery version: 1 month$6.291 Month
- Discovery version: 1 month$7.491 Month
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- Discovery version: 1 month$8.991 Month
- Basic version: 3 months$13.493 Months
- AI Basic Version$15.991 Month
- Basic version: 3 months$16.003 Months
- Basic version: 3 months$18.903 Months
- Standard version: 1 year$22.001 Year
- Standard version: 1 year$26.491 Year
- Basic version: 3 months$26.993 Months
- Standard version: 1 year$30.901 Year
- Standard version: 1 year$43.991 Year
- AI Pro Version$50.001 Year
- AI Pro Version$69.991 Year
- Premium version$44.49
- Premium version$62.00
- Plus version$80.00
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- Premium version$89.00
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









