Grammatisch vs Zertifly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Grammatisch
Master German grammar with interactive lessons and thousands of exercises. Covers essential topics like articles, verb conjugation, and declensions. Practice and review concepts with detailed corrections to improve your understanding.
- Thousands of grammar exercises
- Summaries, tables, and lists
- Topic-based learning
- Detailed answer corrections
- Offline access
- Covers numerous grammar topics
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Learn German for real with Grammatisch. The app has thousands of exercises as well as summaries, tables and lists for the key topics of the German grammar. You don’t need to take leveling tests, just pick any topic and start learning it. You can solve dozens of exercises in a row to memorize concepts and grammar rules in a short time. When you finish an exercises session, you can check your score and a detailed correction of your answers. The following topics are covered: • Bestimmter Artikel • Pluralform • Personalpronomen • Verbkonjugation - Präsens • Possessivpronomen • Reflexive Verben • Nominativ • Akkusativ • Dativ • Präpositionen • N-Deklination • Relativsätze • Trennbare Verben • Perfekt • Adjektivdeklination • Passiv • Verben mit Präpositionen • Konjunktiv II • Nominalisierung …and many more coming in the next updates! This app does not require an internet connection to work.
Zertifly
Prepare for German language exams like TestDaF, Goethe, and telc with structured exercises for reading, listening, writing, and speaking. Features vocabulary tools, progress tracking, and personalized feedback to enhance your learning journey.
- Reading and listening practice
- Writing and speaking exercises
- German vocabulary study tools
- Exam-focused practice activities
- Progress and skill tracking
- Personalized learning support
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Prepare for your German language exams with structured practice for reading, listening, writing and speaking. Zertifly helps learners prepare for TestDaF, Goethe and telc exams with guided exercises, vocabulary tools, progress tracking and personalised feedback. Key features: • Reading and listening practice • Writing and speaking exercises • German vocabulary study tools • Exam-focused practice activities • Progress and skill tracking • Personalised learning support • Optional Zertifly Pro subscription for full access Zertifly is an independent learning platform and is not affiliated with or endorsed by Goethe-Institut, telc gGmbH or TestDaF-Institut. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Grammatisch at 4.7 against Zertifly's 2.7. Grammatisch also leads on ratings volume (723 vs 3) and update cadence (every 9 days vs every 3 weeks). Zertifly's advantage is ads (none vs shown) and iOS requirement (15.1 vs 18.0). 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. Grammatisch sells 5 in-app purchases, starting at $7.99 per 7 days and Zertifly sells 9 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.
Grammatisch holds the better App Store score, 4.7 against 2.7. That said, the two scores are not equally well evidenced: Grammatisch has 723 ratings behind it against 3, so its average is the more settled of the two.
Grammatisch ships an update every 9 days, Zertifly every 3 weeks. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.
| Parameter | Grammatisch | Zertifly |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (723 ratings) — better | 2.7 (3 ratings) |
| Positive reviews | 72.0% of reviews | — |
| Number of ratings | 723 — better | 3 |
| Update frequency | Every 9 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 84 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Konsonant Ensino Digital de Idiomas Ltda | Zertifly LTD |
Customer experience
Grammatisch
Zertifly
Bugs and requests
Grammatisch
Reported bugs
5 issues- Exercises not registering correct answers
- App crashing after completing lessons
- Audio not working on certain devices
- Incorrect grammar explanations in some lessons
- Overlapping UI elements making content hard to read
Requested features
5 requests- Provide more example sentences
- Add translation for exercises
- Implement spaced repetition for better retention
- Expand content to higher proficiency levels
- Improve audio quality and pronunciation guidance
Zertifly
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Grammatisch
- Grammatisch Plus$7.997 Days
- Grammatisch Plus7 Days trial$14.991 Month
- Grammatisch Plus$33.993 Months
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- Grammatisch Plus7 Days trial$45.996 Months
- Grammatisch Plus7 Days trial$89.991 Year
Zertifly
- Level Exam A1–A2$11.991 Month
- Level Exam B1–B2$14.991 Month
- telc B1–B2$14.991 Month
Show 6 moreShow fewer
- Level Exam A1–A2$26.953 Months
- All Access$29.991 Month
- telc B1–B2$32.953 Months
- Level Exam B1–B2$32.953 Months
- TestDaF$44.953 Months
- All Access$67.903 Months
Questions
Is Grammatisch free?
Is Zertifly free?
Which has better reviews, Grammatisch or Zertifly?
Do Grammatisch or Zertifly have ads?
Which is updated more often, Grammatisch or Zertifly?
Other comparisons
