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iOs has a featured called region monitoring that is similar. I use it in my app OnSite Time Tracker. https://itunes.apple.com/us/app/onsite-time-tracker/id470

• nathanstitt 14y ago
  How's that working out for you? I've written a similar (open-source) app called Remindly (https://github.com/nathanstitt/remindly https://github.com/nathanstitt/remindly) that uses region monitoring to fire alarms. I've found it's region monitoring accuracy to be horrid - either the alarms fire when I haven't moved, don't fire at all, or fire an hour later when I'm 20 miles outside the region. Since I have the same issues with the built-in Reminders app, I suspect it's something specific to my geographical area, or the api is just rubbish.
  • andrewtbham 14y ago
    In ios 4 it was accuracy was miles. As of ios 5, it's usually accurate to within a block. but it's not accurate in desolate areas (due to lack of wifi signals).
    • ggdm 14y ago
      Significant location change is clumsy to say the least. If you ask Siri to "remind you to get milk when you leave the house" you can see she sends messages at all different ranges of your leaving. Our engine monitors BTLE for disconnected, or WiFi zones for connected on iOS. Plus we provide background operation in iOS. Let us know what you think of the SDK in your application.