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`iPhone only?': `No' What else is there? You only have an App Store link on the site.

• stangeek 15y ago
  What we mean by this is that recipients do not need to have an iPhone (or even the app) to be able to participate.
  • guptaneil 15y ago
    How is that different than iMessage, which also seamlessly falls back to SMS for anybody that doesn't have iMessage support?
    • stangeek 15y ago
      With iMessage, those on SMS (who don't have an iPhone) won't see everyone else's replies. You can't do group chat over SMS.