A flashcard app for iPhone for the words that will not stick, in English and Japanese. AI writes each card on your own key; a memory model decides the day you see it again.
Every word keeps three numbers: how stable it is in your memory, how hard it is for you, and how likely you are to recall it today. Kakera schedules with FSRS-6, the open model behind modern Anki, and brings a word back when that chance falls to 90%.
Each review you pass makes the curve flatter, so the gaps grow from days to weeks. Fail one and the word returns within the session.
Turn the card and rate how it went. Each button says when the word will come back, worked out for that word before you tap.
Paste a list of words and Kakera writes a card for each one: the meaning in Chinese and in English, examples, where the word comes from, its parts, the words it is confused with, and the phrases it lives in.
It runs on your own Claude or OpenAI key, kept in the iPhone's Keychain. Pick any model your key can use.
adj. 短暂的；转瞬即逝的
Sunlight through the leaves of trees.
Switch the deck to Japanese and every sentence carries furigana. Cards give the kana reading with its pitch accent, split the word into morae, and take the kanji apart. In a quiz, hiragana and katakana count as the same answer.
English and Japanese keep separate decks, reviews and stories. Hide the readings once you no longer need them.
A home-screen widget with what is due, a daily reminder at the hour you pick, and quizzes after each session that feed the same schedule.
Search the deck, filter by tag, and add more by pasting a list: Kakera writes their cards together.
Meaning, examples, similar words and collocations, with room for what the textbook leaves out.
How well the deck is held today, how mature it is, what will slip this week, and your streak.
A short passage that uses what you just reviewed, each word a tap away from its card.
Kakera has no server of its own. What you study is on your iPhone and in your iCloud.
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