I use it for math at the undergraduate to graduate level and have for over a year, but not super religiously. There are plenty of things in math that benefit fr

I use it for math at the undergraduate to graduate level and have for over a year, but not super religiously. There are plenty of things in math that benefit from this treatment. It's good to just know definitions, then when you come across something that satisfies it you'll know what to look for to find out more about it. You'll know the exact requirements of theorems so that you don't have to once again look on wikipedia to see that yes this does require a compact set. You'll find a card that says something you've reviewed before but go "wait, why is that true?" and then work out the general idea again. You can memorize known identities that are just plain useful, things that can't be easily Googled but can be easily recognized. You can put warnings to yourself that certain theorems can be easily applied incorrectly. You can learn the most common names for theorems so that it is easier to communicate with others about them. And above all, it's just another chance to look over things you already should know. I won't claim that it's more or less useful than reading a textbook for the equivalent amount of time or doing problems, but it's certainly more useful than doing nothing. P.S. Anki has very nice LaTeX support! I don't know about the others, but this is invaluable for math.