Instead of there being competing spaced repetition programs and services, I'd much rather companies just go down the route of making well-curated, frequently updating Anki decks and putting them behind a paywall instead.
Refold, a company focused on language learning, does exactly this [0], and having tried their JP1K deck for Japanese for a while, I can say without any hesitation that it was shocking just how high quality everything was.
It had the full works: Japanese audio, kanji, furigana, multiple definitions, a custom background, etc. And I wouldn't be surprised if there were even more changes since the last time I tried it.
I recall there being something similar to this for medical programs, but overall I'd say that this approach sadly isn't something that a lot of people are focusing on.
Refold, a company focused on language learning, does exactly this [0], and having tried their JP1K deck for Japanese for a while, I can say without any hesitation that it was shocking just how high quality everything was.
It had the full works: Japanese audio, kanji, furigana, multiple definitions, a custom background, etc. And I wouldn't be surprised if there were even more changes since the last time I tried it.
I recall there being something similar to this for medical programs, but overall I'd say that this approach sadly isn't something that a lot of people are focusing on.
[0] https://refold.la/decks