google.com/store/apps/details?hl=en&id=bunpro.jp.bunpro_srs
Mobile app for learning Japanese grammar and vocabulary using spaced repetition, with over 900 grammar points, vocabulary decks from various sources, and JLPT practice tests for all levels.
Apps and toolsGrammarVocabularySpaced repetitionSentence patternsExample sentencesAppsJLPTFreeListening practiceImmersion