I love the idea behind Spaced Repetition, and especially incremental reading. Reading incrementally (https://supermemo.guru/wiki/Incremental_reading) is the best way to retain information and helps you read faster too! I didn't see any app out there that had a modern user interface with good UX (SuperMemo is notorious for it's hard to grok interface). So I made my own https://github.com/melpomenex/incrementum-tauri and demo here: https://readsync.org

Nice article but small note:

>You might be thinking "If spaced repetition is so effective, why isn't it more popular?"

I might have thought that 30 years ago - but I can't remember the last time I used a flashcard app (phone, Desktop, etc) that didn't include SRS as the default algorithm. These days the new hotness is FSRS [1] which Anki uses.

[1] - https://github.com/open-spaced-repetition/srs-benchmark?tab=...

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