I've used spaced repetition to help learn stuff in general. It's one of the most rewarding things I've done. Some general thoughts: 1. A lot of spaced repetition apps don't optimize for fast card creation. I like to make a card as soon as I come across something interesting, but the delay to get Anki started, and to create the card, etc just makes it frustrating. I wound up building my own app for this. 2. Cloze dele…
I used Anki to study Chinese for a period of about 10 years. At some point I decided that I wanted to memorize the poker "outs" (probabilities of filling out a hand based on what had currently been dealt). Then I went through a time where I was really busy and didn't study the poker deck for a month (but I made time for Chinese). When I came back to the poker deck, the "spaced repetition" system was completely broken: I had a massive long list of cards that had expired, most of which I'd completely forgotten; but it just kept showing them to me in one giant loop, rather than focusing on a few to actually teach me. And I didn't even have a clean way of telling it, "Just pretend I haven't seen any of these cards at all". I ended up just deleting the deck; that discouraged me from doing anything else I wasn't willing to commit to doing every single day.