The Aosr plugin provides a flexible and feature-rich approach to spaced repetition using flashcards. It supports various question formats including cloze deletions, multi-line patterns, and reversible cards using symbols like ::, :::, ?, and ==. With support for multimedia content like audio and a dedicated review window, users can edit notes while reviewing. A highlight is its minute-level interval control and learning reinforcement system. Aosr stores review data in a separate database (aosr.db), avoiding clutter in the notes. The plugin also includes a customizable deck system powered by rule-based filters (via json-rules-engine) allowing fine-grained control over what gets reviewed. It offers mobile optimization, multi-language support, and integration with Dataview for progress tracking. Designed as an alternative to the original spaced repetition plugin, Aosr improves precision, review interface usability, and learning continuity.