homewrk + ai studying

i have sooo much homework to do lately so naturally i found a solution! i found this epic website called studyable and like its so good! it helps me revise, it writes me notes, it generates flash cards, THERES EVEN AN AI CHAT TUTOR!!! its so good but the one downside is that if you use the free version its limited, like you can only use it a certain amount which is so annoying!!!! 5usd a month really isnt that bad but do i wanna commit that much to it?? ugh i dont know what to do!! if anyone has any free alternatives that work just the same Please let me know, thatd be so appreciated >.<