For step 1, I used that same FA deck as a way to study and review when other means weren't available. For example, I took a week off during dedicated study time to go to a conference and used that deck on my ipod to study on the drive while my wife drove. Given the price, they're fantastic! I bought the ios app years ago because I found anki so helpful, but also because the app is the main source of revenue for an otherwise free product and I wanted to support it.
For classes, I used anki religiously at the start of M1 and converted almost every word of every slide into anki cards. I also excerpted all the relevant images from our slides into the relevant cards so they would be there to reference. Also used it for things like histo by taking a screen shot of a lecture slide and annotating it with arrows and numbers to make a card, or simply by painting over any labels on the picture and resaving. Using the older version of anki, I could convert a whole lecture to cards in about an hour (~100-150 cards).
This worked exceptionally well and resulted in very high 90s exam grades every time, but also was hell on my sanity so I tapered it off partway though the year. I resurrected it whenever I needed to ace a particular part of an exam to keep my grades in a certain range, but otherwise focused more on concept and understanding.
Anki made some cameo appearances during M2, especially for pharm which requires a lot of brute force memorization of material that's not connected to anything else (drug names, etc). It also made a reappearance during step 1 prep when I reviewed my early M1 decks (~4000 cards) to brush up my cell bio and biochem.
