Quite well known issue: <a href="http:&#x2F;&#x2F;www.theverge.com&#x2F;2013&#x2F;10&#x2F;3&#x2F;4797968&#x2F;chrome-for-ios-incognito-mode-not-private-bug" rel="nofollow">http:&#x2F;&#x2F;www.theverge.com&#x2F;2013&#x2F;10&#x2F;3&#x2F;4797968&#x2F;chrome-for-ios-inc...</a><p>Even the chrome support page mentions it[0]:<p>&gt;Note: Your iPhone or iPad might store information about some websites you visit in incognito mode, even though Google Chrome doesn&#x27;t. This is because regular and incognito mode tabs share HTML5 local storage in iOS devices. HTML5 websites can get this information about your visit in this storage area.<p>[0]: <a href="https:&#x2F;&#x2F;support.google.com&#x2F;chrome&#x2F;answer&#x2F;95464?hl=en" rel="nofollow">https:&#x2F;&#x2F;support.google.com&#x2F;chrome&#x2F;answer&#x2F;95464?hl=en</a>