PinyinDic vs Math Drill

PinyinDic - Chinese Character Pinyin Lookup and Study PinyinDic is a modern iOS application designed specifically for Chinese character learning, integrating artificial intelligence technology with scientific learning methods to provide users with a comprehensive experience in Chinese character lookup, learning, and review. ## Core Features: ### Intelligent Multi-Modal Query System • Supports three query methods: keyboard input, handwriting recognition, and OCR image recognition • Integrates Apple Vision Framework, offering industry-leading accuracy for Chinese handwriting recognition • OCR functionality supports camera capture and photo album selection, specifically optimized for Simplified and Traditional Chinese • Intelligent input validation that automatically identifies and filters valid Chinese characters, supporting the full Unicode Chinese character range ### Comprehensive Character Information Display • Detailed character information including: standard stroke order, radical structure, stroke count, and multiple pronunciation pinyin • Complete character definitions with support for parts of speech classification and detailed explanations • Various encoding information: Wubi, Cangjie, Four-Corner Code, Unicode encoding • Chinese-English definition comparison to meet different users' learning needs • Integrated voice reading function supporting standard Mandarin pinyin pronunciation ### Scientific Review and Learning System • Intelligent review algorithm based on the Ebbinghaus Forgetting Curve • Five-level mastery assessment system with personalized review frequency and difficulty adjustment • Learning statistics: daily review count, accuracy rate, and consecutive learning days tracking • Multiple review modes: quick review, deep learning mode, and other options • Smart learning reminders to cultivate good study habits ### Personal New Character Notebook Management • One-tap favorite function to build a personal Chinese character learning library • Multiple sorting and filtering options: by time, pinyin, or mastery level • Supports character and pinyin search within the notebook for quick target character location • Grid-style card display with optional show/hide pinyin, adapting to different learning stages • Supports data import and export, ensuring learning records are never lost ### User Experience Design • Warm orange theme design creating a comfortable learning atmosphere • Rich animation effects and haptic feedback enhancing interactive experience • Complete accessibility support, adapting to different user group needs • Friendly error handling and user guidance, lowering the learning threshold • Supports email feedback and user guides, responding promptly to user needs ## Target User Groups: • Chinese learners and Chinese language enthusiasts • Students and education professionals • Professionals requiring Chinese character queries • Overseas Chinese and Chinese teaching institutions • Anyone wishing to gain deeper understanding of Chinese character culture Whether you are a beginner or advanced user in Chinese learning, PinZiJi provides you with a professional, efficient, and enjoyable Chinese character learning experience. Let technology empower traditional cultural learning, and let every Chinese character become your bridge to exploring Chinese culture. Terms of Use (EULA): https://pinyin.youdroid.top/terms Privacy Policy: https://pinyin.youdroid.top/privacy

Build fast, confident mental math skills with daily practice for kids and learners of all ages. Math Drill turns addition, subtraction, multiplication, and division into short sessions you can finish anytime—no account required. Parents and teachers love the clear progress view: today's practice count, accuracy rate, and time spent. Students review wrong answers in the mistake book, browse history, and see trends in weekly statistics. • Quick start: pick operations, number range, and question count • Timed practice with instant feedback on every answer • Mistake book to revisit problems you missed • History and statistics: accuracy, speed, and streaks • Fully offline—records stay on your device Perfect for elementary homework, times-table drills, and anyone sharpening mental arithmetic.