Has anyone here compared different learning apps for toddlers?

been testing out a few learning apps with my 3yo things like Khan Academy Kids, Kiddopia and ABCmouse. each one feels a bit different. Some are more about reading and letters, others are more playful and creative.

My kid really loves the math and shape games but also gets really into the pretend play stuff like cooking or space adventures. Sometimes I’m not sure if he’s actually learning or just having fun, but then he’ll randomly point out shapes or talk about planets, so I guess it’s working.

Do your kids have a favorite app? What made them stick with it?