Life A1 vs LIfe Dot 2s

Hello,
I have been searching and trying to research if I should get the Life A1 or the Life dot 2s. They look identical. But I have not seen much online comparing the two. Are they an online/offline variation, or two completely different products. I know the Life dot 2s has app support and the a1 do not. Are there any other differences between the two?