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I am interested in hooking into an API like Flurry or Mixpanel or KissMetrics. There are plenty of offerings with specific iOS or Android APIs, but as someone who would be calling them from Javascript in an AppBuilder-bundled app, I wonder which ones are best for this?
It would be especially good if they could continue to function at times when the device is not connected to the Internet (and replay activity to the server when the app is next connected). I'm sure this could be custom-written to use LocalStorage or whatnot, but I wondered if there are any libraries or tools that are conducive to this?