Waffuru vs Kanji Flash Study

Stop wasting time on words you'll never use. Waffuru is an Anki-style Japanese flashcard app that combines data-driven frequency rankings with the FSRS spaced repetition algorithm to help you learn the Japanese that matters most to you. SMART FREQUENCY RANKINGS We've ranked 250,000+ cards by frequency across spoken language, written text, web content, and anime. Adjust the weights to match your goals — preparing for JLPT, watching anime, or reading novels. BOTTOMLESS DECK No more juggling multiple Anki decks. Waffuru uses the entire Japanese dictionary as its card store, feeding you new cards in your preferred frequency order. One button, one unified system. Premium quality audio and images. SPACED REPETITION (FSRS) The popular FSRS algorithm spaces your reviews for maximum memory retention. Learning cards interleave with reviews so you're always making progress. Our system automatically optimizes the FSRS algorithm at the recommended breakpoints so that you don't need to juggle advanced settings. 4 CARD TYPES Study kana, radicals, kanji, and vocabulary — each with rich detail. Word cards show component kanji with stroke order. Kanji cards show composite radicals. Everything is linked to help you create deep mental connections. PREREQUISITE CHAINS Optionally learn radicals before their kanji, and kanji before the words that use them. Every new card builds on what you already know. COLLECTIONS & SEARCH Browse ready-made collections matching popular textbooks or community lists. Search any word and add it to your queue instantly. Create your own cards when you need to. CONTEXT SENTENCES Experience rich context sentences, at 3 levels: easy, intermediate, and hard. Listen to accompanying sentence audio to learn pronunciation and listening. CROSS-PLATFORM SYNC Start studying on your phone, finish on desktop. Your progress syncs instantly. ANKI COMPATIBLE Import your Anki decks and existing progress. Export progress anytime — your data is always yours. CUSTOMIZABLE CARDS Toggle readings, audio, sentences, images — show exactly what helps you learn. Optionally have cards automatically rotate fonts so you recognize characters in any typeface. SUBSCRIPTION REQUIRED Waffuru requires a subcription to access all features, however all new users get a free 30-day Premium trial, no credit card required. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Learn and retain Japanese kanji the proven way — with spaced repetition. Kanji Flash Study covers all 1,318 kanji from JLPT N5 through N1, complete with meanings, on'yomi and kun'yomi readings, stroke counts, and example vocabulary. The built-in SM-2 algorithm — the same system behind Anki — schedules your reviews at scientifically optimal intervals so you spend more time on what you're about to forget and less time on what you already know. HOW IT WORKS Pick your JLPT levels and session size, then tap Start Review. Each card shows a kanji character — tap to reveal its meaning, readings, and an example word. Rate your recall as Again, Hard, Good, or Easy, and the app adjusts the next review date automatically. Cards you miss are re-queued in the same session so you always end on a strong note. FEATURES - 1,318 kanji across JLPT N5, N4, N3, N2, and N1 - SM-2 spaced repetition for efficient long-term memorization - On'yomi and kun'yomi readings with example words and translations - Searchable kanji library with level filters and progress indicators - Statistics dashboard with streak tracking, accuracy, activity heatmap, and per-level breakdown - Daily study reminders via notifications - Fully offline — no account, no internet, no subscriptions - VoiceOver and Reduce Motion accessibility support - Clean, native SwiftUI interface designed for focused study BUILT FOR EVERY LEARNER Whether you're starting with basic N5 kanji or tackling advanced N1 characters, the app adapts to your pace. Select one level or all five — your progress is tracked independently for each. YOUR PROGRESS, YOUR DEVICE All study data stays on your device. No sign-up required, no data leaves your phone. Just open the app and start learning.