Slightly off-topic: you probably shouldn't do a secure messaging app. Security experts agree: if you're not an expert, don't build security apps / systems. Ba

Slightly off-topic: you probably shouldn't do a secure messaging app. Security experts agree: if you're not an expert, don't build security apps / systems. Back on topic: I say if you can come up with a plan to compete with existing competitors, and it seems reasonable to you--go for it.