Usage of Anki in the biomedical community is frequently mentioned, but I just wanted to add some notes. These are based on my own personal experiences and conversations with med students, so YMMV. I personally use Anki with the Image Occlusion Enhanced and Speed Focus Mode add-ons almost every-day, and frequently use text-to-speech/swipe gestures on the android app to review cards while hiking.
If you're casually doing like 20 cards a day on the train while commuting to work, this will definitely not apply.
A. Anki is almost never used alone in medical education. It's used as an aid to retaining information within a heavily-structured curriculum where you're going over the same concepts over, and over, and over in the form of lectures, clinical encounters, supplemental videos, more lectures, anatomy lab, histology lab, boards-prep, etc. So, like the author said, there's a ton of med students using it, but context is very important.
B. Lots of people don't use the algorithm. They use it in cram-mode to drill a subset of a pre-made deck into their head before an exam. Even if you never use the SRS algorithm, Anki is by-far the greatest flashcard program ever built (cloud sync, TTS, robust image support, open-source, etc.).
C. Many of the people grinding thousands of cards a day have a lot of factual knowledge, but really aren't great at stitching it together for practical application. If you need to memorize random facts, great, but be very aware of that potential limitation.
D. Game-pads are the secret weapon. Joy2Key, or roll-your-own in Python like I did with the Inputs and PyAutoGui packages.
E. Use it with a very specific goal in mind. Med students are by-and-large using it specifically for the USMLE Step 1 exam, in which you have to memorize a finite, well-delineated set of information, much of which is irrelevant after the first two years. I've never met anyone who has graduated med school and kept using it, because grinding cards sucks and life is short.
F. Don't be afraid to commit deck bankruptcy. If you're reviewing 900 cards a day, and you don't know why anymore, delete the deck and start from scratch.
G. There's a distinct balance between reviewing cards so frequently that you've memorized the cards not the concepts, and making the cards so challenging that it takes too long to review efficiently (I did 871 cards in about 2 hours today - that's a common number for a med student, some kids are doing thousands per-day - like, they roll out of bed and start tapping on that game controller). Be very, very aware of that memorizing the cards thing. You probably don't know as much as you think you do.
So, in summary, it's a really cool program. I wouldn't characterize it as a superpower, however, since it has some glaring downsides, and is not particularly noteworthy when used in a vacuum. Again, that's from somebody doing >500 cards/day.