Right answer = revealed and not marked missed. Per kanji: N5 1 point … N1 5 points (●), half if its reading was shown as a hint. Each word scores once a day; a word from the missed pile scores double. Kanji level up: bronze (right in a word, +2), silver (3 words, +5), gold (every reading, +10).
Import in Anki with File → Import and pick your note type (6 fields: English · word · – · – · reading · kanji & notes; tags in column 7). Deck: Vocab::Kanji Trainer.
Saves your progress (seen and missed words, points, streak, collection, badges, Anki list, settings) to a file. Restore it on another phone or browser; it replaces the progress there.
Word data: JMdict & KANJIDIC2 (EDRDG, CC-BY-SA 4.0), JLPT word and kanji levels from Jonathan Waller's lists (CC-BY; kanji lists via the kanji-data package, MIT), stroke order from KanjiVG (CC-BY-SA 3.0). Source