I have been working on the timed repetition one for the past couple of years. https://vocabifyapp.com https://vocabifyapp.com It's a Chrome extension & web ap

I have been working on the timed repetition one for the past couple of years. https://vocabifyapp.com https://vocabifyapp.com It's a Chrome extension & web app for highlighting bits you read online. Then it generates flashcards for you to review on a spaced repetition-type schedule. No Firefox extension yet, but shouldn't be hard to port over. Very interesting read, quite impressed with the other experiment proposals.