What separates the Boox Note Air 3C from competing products is that it has the Google Play store and is capable of running any Android application. Note however that eInk displays do not have the fast refresh of traditional tablet displays and therefore not all applications will run well, but apps like Readwise Reader and Google Calendar are a good fit. I narrowed my choices of which eInk device to buy to the Supernote Nomad and the Boox Note Air 3C and then picked the Note Air 3C because it can run any Android app whereas the Supernote is limited to only the Kindle app. The tradeoff is that reviews indicate Supernote has some functionality in its note taking capability that Boox does not have, and the Supernote Nomad is smaller and lighter than the Note Air 3C.