One curriculum, one scheduler, and the surfaces that hang off them. Nothing here is a roadmap item unless it says so.
A curriculum that keeps its place.
Npass draws five new words at a time from a cursor that remembers where you stopped, shows them two cards at a time, then quizzes only that batch. At each unit boundary a short test gates the next block, so you cannot outrun what you have actually learned.
FSRS-5, not a fixed interval ladder.
Every card carries its own difficulty and stability. Easy cards drift further out, shaky ones return sooner, and the daily queue stays the size of what genuinely needs attention rather than everything you have ever seen.
Watch it, trace it, then write it blind.
The detail card flips: the front animates stroke order and plays the reading, the back breaks the character into its components with a plain-language gloss for each one. The writing exercise runs four phases and scores shape, neatness and stroke direction.
Formation, explanation, examples.
Each point is laid out the same way every time, so you always know where to look. When a point will not click, the grammar chat answers follow-up questions in your own words instead of making you search for a better explanation.
Passages at your level, with the training wheels you choose.
Length and question difficulty follow your JLPT target. Furigana has four modes, from always-on to hidden. Tap any word for its reading and dictionary form, then save it straight into your deck. Read to Improve writes passages around the vocabulary you have actually studied.
A studio for 作文, with a second pair of eyes.
Write in Japanese and the reading pane fills in furigana and a translation under every sentence as you go, with no button to press. Select a line for a rewrite, a proofread, or word ideas. The review returns a score, a detected JLPT level, and the specific grammar and spelling issues it found.
Mock papers shaped like the real thing.
Two sections mirror the JLPT paper: 言語知識（文字・語彙） and 言語知識（文法）・読解. Every answer comes with an explanation, so a wrong pick teaches you something rather than just costing a point.
In development.
Listen-and-repeat practice with pronunciation feedback, speed control, recording and playback. The screen is in the app already and says plainly that it is not finished, because a locked door is better than a broken room.
