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DecksMD 1.5.0

Released 4 April 2026

Changes

FSRS algorithm

  • Upgraded scheduling algorithm from FSRS v4.5 to FSRS v6
  • Forgetting curve now uses a trainable decay parameter (w20) for more accurate retention modeling
  • Initial difficulty now uses an exponential formula for better calibration across rating levels
  • Difficulty updates now apply linear damping, preventing difficulty from getting stuck near the maximum
  • Same-day reviews now use a dedicated short-term stability formula (w17–w19) instead of the long-term formula
  • Interval calculation updated to match the FSRS v6 specification

Commands

  • Added "Show release notes" command to view what's new in the current version
  • Added "Create test deck" command to generate a sample flashcard file demonstrating table and header-paragraph formats

New installations

  • A getting-started deck is automatically created on first install, showcasing both supported flashcard formats

Also on GitHub.