한글 Flash is a browser-based flashcard and quiz app for learning to read Korean, from individual letters to full sentences.
Four Learning Levels: Content is organized into four progressive levels — Letters (자음/모음), Syllables, Words, and Sentences — so learners can build reading speed step by step.
Practice Mode: Players flip through flashcards and self-grade each card as Hard, OK, or Easy. A timer bar can be set to 3 s or 10 s to add pressure and train reading speed.
Quiz Mode: Players are shown a Korean character or phrase and must pick the correct romanization or meaning from four multiple-choice options, with immediate right/wrong feedback.
Text-to-Speech: Every card has a speaker button that plays native Korean pronunciation via the Web Speech API.
Round Results: After each round, a summary shows the Hard/OK/Easy breakdown and lists any cards marked Hard for quick review before moving on.
Theory Tab: A built-in reference explains how Hangul syllable blocks work, covering basic consonants, tense consonants, basic vowels, Y-vowels, compound vowels, and reading order rules.
Configurable Round Size: A slider lets players choose between 5 and 30 cards per round.
Vanilla HTML, CSS, and JavaScript. No build step or dependencies — open index.html directly in a browser.