For a 2-year-old, Khan Academy Kids is a solid free option that covers early literacy and numbers without feeling too overwhelming, a few mums I know swear by it for this age. Sago Mini World is another one worth trying, very gentle and open-ended which suits toddlers who aren't quite ready for structured learning yet. Someone in my mum group mentioned Pok Pok, it's less "drill and practice" and more creative play, so if you want something that builds curiosity rather than just memorising shapes and letters, that one has a different feel to it. Endless Alphabet is good specifically for vocabulary, though some parents feel it works better closer to age 3 when kids start picking up words faster. Honestly, the free trials most of these offer are worth using first since every child responds differently, better to test a few than commit straight away.