I have tried countless apps for flash cards and this is by far the best. I love it a lot, it’s not pushy or annoying about upgrading, and it doesn’t lock crucial features behind paywalls. However, as far as I’m aware you can’t duplicate decks, which can cause issue for me sometimes. There might be a way and maybe I haven’t discovered it? I tried exporting and re-importing the deck I wanted duplicated but it didn’t work. Otherwise it’s an amazing app, would 100% recommendEdit: They asked why is was so important to be able to duplicate decks, and the reason is to have an individual deck and a big deck. For example, if I make a mammalogy deck, I could duplicate it and merge it with an ornithology deck to make a general zoology deck. Then I could study mammalogy and ornithology at the same time or just study mammalogy. I could also duplicate decks to have a new and old version of I need them. It’s a very useful feature and it’s hard for me to make 100+ cards just to have to remake them in a larger deck. It saves timeEdit 2: They have a way to study multiple decks at once! Although I would prefer being able to duplicate decks, it’s really not a big deal because it does the same thing in the end. This app is a 9.5/10 and I doubt there’s a better flashcard app out there
You can actually study decks together already. Select the triangle button in the root folder screen, and then you can select multiple decks to study together.