Yeah I just use the one that jojosiwa123 linked above on my computer. I'm pretty sure you can just go onto the webpage on your phone if you'd like to use it on your phone but the app on the phone is $25 but if you use it often enough I'd say it is probably worth it, especially if you have long commutes to school or anything like that.G'day turtle67
Which Anki app is that? I tried searching it up and it came up with 15 different apps.
I started using it about 3-4 weeks before prelims I think, mostly for economics and business studies, a bit of other subjects like chemistry and English (techniques and stuff) and I found it worked really really well for me. Although it's important that you do your assigned cards every day. If you start making cards when Year 12 starts, you'll well and truly have everything memorised by the end of year 12, then you won't need to go over your notes or whatever as much before the HSC because you'll have already memorised them and can start doing practice questions earlier.