Applebot is the web crawler for Apple, used by products including Siri and Spotlight Suggestions. It respects customary robots.txt rules and robots meta tags. It originates in the 18.104.22.168 net block.
User-agent strings will contain “Applebot” together with additional agent information. For example:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5 (Applebot/0.1)
If robots instructions don't mention Applebot but do mention Googlebot, the Apple robot will follow Googlebot instructions.
Will AppleSearch be 'a feature Apple users want', 'a Google Killer', or 'the Rise of Siri'? You decide...
This whole thing is wildly inaccurate. Rounding errors, ballot stuffers, dynamic IPs, firewalls. If you're using these numbers to do anything important, you're insane.
What makes any one set of browser share statistics any better than any other?
This is clearly another case of too many mad scientists, and not enough hunchbacks.