CO2 Modeller vs Moya Chinese Flashcards

Model the effect of carbon emissions reductions on climate change using your smartphone or tablet. CO2 Modeller uses a streamlined computationally efficient Earth system model to simulate the effect of carbon emissions reductions on climate change. It generates twenty-first century projections of atmospheric carbon dioxide concentration and global averages of surface warming, sea level rise and ocean acidification.

Learn Chinese Daily: Flashcards, Dictionary, HSK 3.0, Pinyin & Spaced Repetition, all in one app. Grow your Chinese. One character, one day, one leaf at a time. Moya Chinese is a Chinese learning app built for daily study. Improve your Mandarin with flashcards, quizzes, spaced repetition (SRS), and HSK vocabulary. 100% ad-free, fully offline, focused learning that helps you stay consistent. BUILD A DAILY CHINESE LEARNING HABIT Learning Chinese takes consistency. Moya helps you build it with: * Simple daily reviews * Streak tracking and progress stats * Light gamification with a growing bamboo plant and room decoration Turn Chinese study into a habit you actually keep. SMART SPACED REPETITION (SRS) Our spaced repetition system shows you the right Chinese words at the right time: * Difficult characters appear more often * Known vocabulary appears less frequently over time * Optimized for long-term memory and recall You focus on studying — the system handles the rest. 8 CHINESE STUDY MODES Practice reading, writing, listening, and recall with varied Chinese learning exercises: * Flashcards (tap to reveal) * Multiple choice (Chinese to English and English to Chinese) * Radical builder (learn character structure) * Listening practice (audio recognition) * Pinyin typing (tones and pronunciation) * Sentence fill-in-the-blank (learn in context) * Reverse flashcards (meaning to character) Short sessions of 5–10 questions keep learning fast and engaging. LEARN CHINESE YOUR WAY * Choose your pace: 20, 40, or 60 new words per day * Study goals: Travel Chinese, Business Chinese, HSK prep, or casual learning * Beautiful themes: rice paper, ink wash, jade, and more * Offline mode: learn anywhere, anytime HSK VOCABULARY BY LEVEL Structured HSK word lists help you learn in the right order: * Beginner to intermediate (HSK 1–4) * Ideal for exam prep or structured study FREE FEATURES * Full spaced repetition system (SRS) * 5 study modes including listening * 20 new words per day * Bamboo plant and room decoration * Collectible items and customization * Streak tracking and learning stats PREMIUM FEATURES * All 8 study modes (including pinyin typing and sentence practice) * 40 or 60 new words per day * Extra themes (jade, parchment, red seal) * Exclusive collectibles * Faster progression No account required. Start learning Chinese in seconds.