And it's pretty great.
Periscope arrives today on iPhone, with streams also viewable on the web. (An Android version is forthcoming.) Like Meerkat, it allows you to broadcast whatever you’re doing — whether it’s breaking news or making breakfast — live, through video, with a couple of taps. Unlike Meerkat, Periscope can save streams so that you can replay them later. It turns out to be Periscope’s killer feature — and the main reason that it’s likely to become my live-streaming platform of choice.