Comparison

Grammatik Duell vs Charles Darwin

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Grammatik Duell

Practice German grammar and spelling through an engaging matching game. Choose from various grammatical areas and difficulty levels to improve your language skills. Compete against yourself or others in this fun, educational duel.

Highlights
  • German grammar and spelling practice
  • Matching game mechanics
  • Variable card pairs and player numbers
  • Adjustable difficulty levels
  • Read-aloud function
  • Focuses on grammatical areas
  • Reward system for motivation
Features
Read full description

+++ Dyslexia Quality Award Winner 2015 +++ This entertaining and educational matching game app helps you practice your German grammar and spelling in a fun way. Whether you need to brush up on parts of speech, conjugation or declination, tenses and types of sentences - no matter what you need, the various grammatical areas can be combined with each other and practiced. With one click, the appropriate themes are chosen, easy as pie, and you can start right away. Matching pairs must be found, either by purely assigning terms to the proper categories (intelligent = Adjektiv | Ich werde spielen = Futur 1) or as a concentration-enhancing matching game. THE GRAMMATIK DUELL HELPS YOU PRACTICE YOUR KNOWLEDGE IN A FUN WAY Both the number of card pairs and the number of players are, of course, variable. Depending on your wishes, the cards can be read aloud, and the length of time in which the cards are revealed is adjustable. The difficulty level of the app increases with the number of card pairs and the chosen area of grammar. It is aimed at all students who are not yet entirely comfortable in their use of grammatical terms or who want to practice for their next grammar lesson in a fun way. You can also work on improving your spelling. STRONG MOTIVATION TO LEARN GRAMMAR On your own in a race against time or against a challenging opponent - who will use the fewest number of moves to find the matching pairs? Who will collect the most stars and end up the winner in this grammatical duel? The beautiful visual presentation of the playing cards, the acoustic sounds of success, the pleasing voice that reads aloud, the game variations, the pedagogically sophisticated content and the strict limitations of only relevant content make this app a truly worthwhile learning aid. The Grammar Challenge makes learning grammar fun! PEDAGOGICAL BENEFITS OF THE APP: • Self-explanatory • Concentrates on the content without distractions • Motivates with a reward system • Practice mode • Boosts concentration skills • Selectable levels of difficulty • Selectable number of card pairs • Selectable read-aloud function • Selectable areas of grammar • “Assignable” game variations • Beautiful, relevant graphics • No in-app purchases • No online connection necessary • Learning psychology tested and approved TECHNICAL AND PEDAGOGICAL KNOW-HOW COME TOGETHER IN THE GRAMMATIK DUELL The idea for this app with regard to its content was created by licensed pedagogue Uta Reimann-Höhn (www.lernfoerderung.de), who has published numerous books as an expert on education and upbringing, and who has been the editor-in-chief of “Lernen und fördern mit Spaß!” (“Learn and Grow with Fun!”) since 2006. The idea was implemented by Jan Essig (www.janessig.com), a designer who has made a name for himself with his high-quality educational apps “Adventure Playground” and “Preschoolers ABC Playground” and has won numerous awards.

About

Charles Darwin

Embark on Charles Darwin's historic voyage aboard the HMS Beagle. Explore maps, diagrams, and text detailing his discoveries and the science of evolution. Test your knowledge with an included quiz.

Highlights
  • Trace HMS Beagle's voyage
  • Learn about Darwin's discoveries
  • Explore maps and diagrams
  • Study the science of evolution
  • Test knowledge with a quiz
Features
Read full description

Follow Charles Darwin on his epic voyage aboard the HMS Beagle on its five year journey of exploration and discovery. Charles Darwin sailed from Plymouth, England in 1831. The ship was equipped with scientific instruments for observation and measurement. On this journey Darwin kept copious notes and collected samples of plants, animals, rocks and fossils. As a naturalist he sought to explain the great diversity of life that he found. His research lead him to a comprehensive theory that would become the foundation of modern biology. Learn about the HMS Beagle, a British Royal Navy vessel, gained renown as the ship that carried Charles Darwin on his historic voyage around the world from 1831 to 1836. Designed initially for surveying and charting, the Beagle became an emblem of scientific exploration due to Darwin's transformative journey aboard. Setting sail from England, the ship traversed oceans and continents, allowing Darwin to collect an extensive array of specimens and observations that would later form the basis of his groundbreaking theory of evolution by natural selection. The Beagle's legacy extends far beyond its physical existence, as it represents the intersection of maritime adventure and scientific inquiry that forever altered our understanding of the natural world. Use this app to trace the voyage of the HMS Beagle and learn about Darwin's important discoveries. The app includes maps, diagrams and text to help students learn about the science of evolution. A quiz helps learners measure how well they understand key concepts.

Screenshots

Grammatik Duell4 screens

Verdict

The call

The clearest difference is review sentiment: Grammatik Duell at 25% against Charles Darwin's 0%. Grammatik Duell also leads on update cadence (every 2 months vs every 6 months) and price ($0.99 vs $1.99). On ads, 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

CostPrice · In-app purchases · Ads · Monetization

Grammatik Duell costs $0.99 and Charles Darwin $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Grammatik Duell ships an update every 2 months, Charles Darwin every 6 months. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.

Scorecard4 real differences · 4 level
Grammatik Duell versus Charles Darwin: the parameters behind the verdict, then further details
ParameterGrammatik DuellCharles Darwin
Price$0.99 — better$1.99
Positive reviews25.0% of reviews — better0.0% of reviews
Update frequencyEvery 2 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPad, Mac, Apple TV
Requires iOS12.0 — better15.6
Further details — not scored
Size15 MB44 MB
Age rating4+4+
DeveloperJan EssigVentura Educational Systems

Customer experience

Grammatik Duell

Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

Charles Darwin

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Grammatik Duell

No in-app purchases

None

Charles Darwin

No in-app purchases

Questions

Is Grammatik Duell free?
Grammatik Duell costs $0.99, with no in-app purchases.
Is Charles Darwin free?
Charles Darwin costs $1.99, with no in-app purchases.
Do Grammatik Duell or Charles Darwin have ads?
Neither Grammatik Duell nor Charles Darwin shows ads.
Which is updated more often, Grammatik Duell or Charles Darwin?
Grammatik Duell ships an update every 2 months, and Charles Darwin every 6 months. Most recently, Grammatik Duell was updated on September 7, 2026 and Charles Darwin on September 10, 2026.

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