I love Casey but this is literally Snapchat with a novelty record button, if it wasn't for him and his fans this would have never been able to take off remotely. Bless him, he deserves the succes, but the app. meh.
The thing about apps is there can only be one. Nobody is going to check out the marginally worse copy or the later version. This is exactly the same. Nothing new, no reason to switch really