Derdy vs MathTalk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Derdy
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Learn German articles the fun way - with Derdy! Mastering German articles (der, die, das) is tricky - there aren't perfect rules, just practice. That's where Derdy comes in! Our friendly hedgehog mascot helps you learn through interactive games, smart features, and zero pressure. Four Practice Modes - Chilled Mode - Swipe to practice at your own pace (no stress!) - Timed Mode - Race against the clock for bonus points - Streak Mode - How many can you get right in a row? - Review Mode - Focus on your mistakes until they stick Smart Features - Speak or type any German word - instantly discover its article - Learn plurals and translations (Premium) - Double-tap words to save favorites - Organize your vocabulary in custom folders (Premium) - Generate study PDFs to review offline (Premium) - Deep-dive into any word with detailed information - Add personal notes to words - perfect for teachers and students! Built for Everyone - Interface available in 25 languages - learn German even if you don't speak it yet! - Works offline thanks to smart fallback technology - Zero ads, zero data collection - just learning - Free to try with optional Premium subscription Why Derdy? Because German articles don't follow strict rules - they need practice. Derdy makes that practice fun, not frustrating. Whether you're a beginner tackling your first nouns or a teacher building study materials, we've got you covered. Try it free today and let Derdy guide you! Premium unlocks folders, PDFs, and translations - but we're happy to have you either way! Privacy policy: https://derdy.at/privacy.html Terms of Use: https://derdy.at/terms.html
MathTalk
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MathTalk: AI-Powered Question Solver and Study Assistant Solving a question is no longer just about finding the answer; it is about understanding where you got stuck, identifying your weak points, and studying more effectively. MathTalk is an AI-powered learning platform that explains the questions you cannot solve step by step, analyzes your performance, and helps you make your study process more efficient. Now, MathTalk is not limited to mathematics; it offers a broader experience that you can use across all subjects. Why MathTalk? Instant and Step-by-Step Question Solving Take a photo of your question and get a step-by-step AI-powered explanation in seconds. Learn not only the answer, but also the logic behind the solution. Question Solving Across All Subjects MathTalk is now by your side not only for mathematics, but also for different question types you encounter in YKS, LGS, TYT, AYT, and school subjects. Upload your question and understand the topic better with step-by-step explanations. 100% Accuracy Rate* MathTalk works with a specially developed solution system designed to provide reliable, consistent, and accurate answers with a high accuracy rate. Fast Practice with Rush Mode With the new Rush Mode, you can solve questions by swiping, practice faster, keep your streak going, and make studying more engaging. Compete on the Leaderboard Earn points as you solve questions, see your place in the rankings, and boost your study motivation. Improved Analytics Page Track your performance with clearer charts and insights. See which topics you are strong in and which areas need more practice. Parent and Teacher Panels With dedicated panels for parents and teachers, student progress can be followed more easily. Performance reports, progress tracking, and goal-oriented analytics make the learning process more measurable. Easier to Use Important features that were previously harder to access are now available directly from the main screen. With its improved interface, MathTalk is simpler, faster, and easier to use. Easy Sign-In with Apple and Google Creating an account and signing in is now much faster. You can easily log in with your Apple or Google account. Key Features • AI-powered question solving • Scan questions with a photo • Step-by-step explained solutions • Use across all subjects • 100% accuracy rate in mathematics* • Support for YKS, TYT, AYT, and LGS preparation • Swipe-based question solving with Rush Mode • Leaderboard and point system • Improved analytics page • Parent and teacher panels • Performance and progress reports • Cleaner and faster interface • Easy sign-in with Apple and Google • Performance improvements and bug fixes With MathTalk, studying is now faster, clearer, and more motivating. Do not get stuck on questions you cannot solve. Upload your question, learn step by step, and track your progress. *The 100% accuracy rate currently applies only to mathematics questions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Derdy at weekly against MathTalk's every 2 weeks. Derdy also leads on iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases 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. Derdy sells 2 in-app purchases, starting at $2.99 per month and MathTalk sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
Derdy ships an update weekly, MathTalk every 2 weeks. Both last shipped on October 30, 2026.
| Parameter | Derdy | MathTalk |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 84 MB | 34 MB |
| Age rating | 9+ | 4+ |
| Developer | Mohamed Amine Kouki | Serdar KULEK |
In-app purchases
Derdy
- Monthly Premium Subscription$2.991 Month
- Yearly Premium Subscription$14.991 Year
MathTalk
- MathTalk Monthly Subscription$6.991 Month
- MathTalk Premium Yearly1 Year trial$69.991 Year









