What are your expectations for use?
Really, it's a curiosity. It could feasibly work as a non-disrupt-able network in a disaster area, or in a protest in an authoritarian state, or it could simply be a network that is difficult to monitor. But in all honesty, it's been sitting in the back of my mind as just something interesting, and possibly whimsical. It could be made for iOS, but any iOS phone would almost certainly need to be jail-broken to use it. It's kinda outside the garden.