Spaced Repetition

Apps that implement spaced repetition for learning:

• Anki
• Obsidian (via the Spaced Repetition community plugin) (Plugin link)
• SuperMemo

Information on how to use spaced repetition effectively:

• Effective Spaced Repetition, Fernando Borretti
  • HN Comments
• How to write good prompts, Andy Matuschak
• Twenty Rules of Formulating Knowledge, SuperMemo