Snapchat is a much more of a personal messaging app while instagram works like a social networking app. There's a little overlap in their features but they're

Snapchat is a much more of a personal messaging app while instagram works like a social networking app. There's a little overlap in their features but they're not used the same way. They aren't competing for users. If you want to talk to someone you use snapchat, if you want social validation use instagram.