Learn vocabulary faster with Koki Flashcards, a smart flashcard app powered by spaced repetition (SRS). Create your own flash cards, study ready-made vocabulary decks, and review difficult words at the right time.
Study with Anki-style flashcards and spaced repetition, with ready-made decks for English, Japanese, Chinese, Korean, Spanish, IELTS, TOEIC, JLPT, HSK, TOPIK, Minna no Nihongo, and more.
SMART FLASHCARDS WITH SPACED REPETITION
Koki uses a spaced repetition system (SRS) to help you remember vocabulary for longer. Difficult flashcards appear more often, while words you already know are reviewed less frequently. Your study schedule adapts as you learn so you can focus on what needs the most attention.
READY-MADE VOCABULARY DECKS
Start learning immediately with flashcards organized by language, level, and goal:
• English vocabulary and English flashcards
• IELTS vocabulary and TOEIC vocabulary
• Japanese vocabulary and Japanese flashcards
• JLPT vocabulary from N5 to N2
• Minna no Nihongo vocabulary
• Hiragana, Katakana, and Kanji
• Chinese vocabulary and Chinese flashcards
• HSK vocabulary and HSK flashcards
• Korean vocabulary and Korean flashcards
• TOPIK vocabulary
• Spanish, German, and French vocabulary
• More languages and study decks
CREATE YOUR OWN FLASHCARDS
Koki also works as a flexible flashcard maker. Create custom flashcards in seconds and add words, definitions, translations, images, pronunciation audio, example sentences, and notes. Build vocabulary flashcards for language learning, school, exams, work, or anything you want to remember.
LEARN WITH IMAGES, AUDIO AND EXAMPLES
Make new words easier to understand and remember with clear meanings, helpful images, natural pronunciation audio, real-world examples, useful context, and translations.
PRACTICE WRITING, PRONUNCIATION AND QUIZZES
Go beyond simply flipping flashcards. Practice with:
• Writing and spelling exercises
• Pronunciation practice
• Dictation
• Matching quizzes
• Multiple-choice questions
• Test mode
Switch between different study methods to strengthen active recall and keep reviews engaging.
PERSONALIZED SRS LEARNING
Koki adjusts your spaced repetition schedule based on your learning history and review results. Difficult vocabulary can return sooner, while words you remember well can wait longer. You can also customize study settings, including how many new words you want to learn each day and how frequently cards should return.
STUDY ENGLISH, JAPANESE, CHINESE AND MORE
Build English vocabulary for daily communication, IELTS, TOEIC, and academic study. Learn Japanese with JLPT flashcards, Minna no Nihongo, Hiragana, Katakana, Kanji, audio, examples, and SRS reviews. Study Chinese and Mandarin vocabulary with HSK flashcards, pronunciation, meanings, and spaced repetition. Koki also supports Korean, Spanish, German, French, and many other languages.
WHY KOKI FLASHCARDS?
Koki combines:
• Smart flashcards
• SRS and spaced repetition
• Ready-made vocabulary decks
• Custom flashcard creation
• Images and pronunciation audio
• Example sentences
• Writing and spelling practice
• Pronunciation and dictation
• Multiple quiz modes
• Personalized review schedules
Whether you are preparing for IELTS, TOEIC, JLPT, HSK or TOPIK, studying Minna no Nihongo, learning a new language, or simply building vocabulary every day, Koki gives you a flexible way to learn and review.
Create flashcards, review with spaced repetition, practice active recall, and build vocabulary that lasts.
Koki Flashcards — smart vocabulary learning with flashcards, SRS, and spaced repetition.
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