MathStar Practice vs HanKa (汉卡)

MathStar helps you improve mental arithmetic through structured daily practice. Train addition, subtraction, multiplication, division, percentages, and mixed exercises while tracking your progress over time. Features: • Multiple training modes • Adaptive difficulty • Speed and accuracy tracking • Progress statistics • Skill development system • Focus-oriented practice sessions • Clean distraction-free interface • Local-first privacy design MathStar is designed for students, professionals, lifelong learners, and anyone looking to sharpen mental calculation skills. Premium subscription unlocks advanced training features and extended statistics. Subscription information: Available subscriptions: • Monthly Premium Subscription • Annual Premium Subscription • Payment is charged to your Apple ID account upon confirmation of purchase. • Subscription renews automatically unless cancelled at least 24 hours before the end of the current billing period. • You can manage or cancel your subscription anytime in your Apple ID Account Settings. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mathstar-app-support-tqdc.bolt.host/privacy Practice consistently. Track your progress. Improve every day.

Learn Chinese characters and pinyin, level by level, with the new official HSK 3.0 standard (11,000 words, levels 1 through 7-9). HanKa turns vocabulary memorization into a simple gesture: flip the card, then swipe right if you know it, left if you don't. The spaced repetition algorithm handles the rest: words you know come back less and less often, while the stubborn ones return within minutes. SMART FLASHCARDS - The complete official HSK 3.0 vocabulary: simplified and traditional characters, pinyin, translations in English, French, Vietnamese, Thai and Russian - Spaced repetition (SM-2): review less, remember more - Two modes: characters on the front, or pinyin on the front - Pinyin hints below characters, on by default for HSK 1-2 - Mandarin audio pronunciation on every card FIND YOUR LEVEL - Pick the HSK level you're preparing, from HSK 1 to HSK 7-9 - Not sure where you stand? The placement test estimates your level in minutes STAY MOTIVATED - Daily goal and day streak - 18 achievements to unlock - Per-level quizzes: character → meaning, meaning → character, and listening comprehension - A gentle daily reminder (never sent if you've already studied) - "Word of the hour" lock screen widget (Premium): a character, its pinyin and translation, refreshed every hour BUILT FOR YOU - 100% offline: study on the subway, on a plane, anywhere - No account required, no data collected - Interface in English, French, Vietnamese, Thai and Russian, detected automatically - Comfortable on iPhone and iPad - Design inspired by traditional China: cinnabar red, gold and rice paper FREE, PREMIUM IF YOU WANT HSK 1 is completely free, along with the first 100 words of every other level. A single one-time purchase unlocks everything, forever. No subscription. HanKa is built on the official HSK 3.0 word lists, the standard in effect since July 2026. Perfect for exam prep, daily review, or simply (re)discovering Mandarin. 加油!