There are quite alot of differences, no downvotes which means people can have freedom of voice without being afraid of flag wars and being bullied, no stable coin like HBD/SBD for a simpler economy. Blurt will focus on a mobile app and advanced governance features to prevent large stake from controlling consensus, Zapata will focus on dominating third world countries like Nigeria with a single country focus at a time.
Both have teams of enthusiasts who are doing it for enjoyment as well as profit, where there is passion, success will follow.
Will Blurt be completely mobile, or will there be a desktop version available also?