Replied to Browser Bookmarklets and Mobile Sharing with Post Kinds Plugin for WordPress by Chris AldrichChris Aldrich (Chris Aldrich | BoffoSocko)
Making it easier to post to WordPress on desktop and mobile. ...I’d suspect that there’s also a similar app for iOS, but I haven’t checked. If not available, URL Forwarder is open source on Github and could potentially be ported. There’s also a similar Android app called Bookmarklet Free which could be used instead of URL Forwarder.

One possible way of doing this on iOS is to use the Workflow app.

You can find the workflow here.