I've just released a new Free mobile friendly web-based version of Steem Office. It works on Android, iOS, Chromebook, and even Raspberry Pi devices. I'm calling it Steem Office Lite. You can find it at SteemOffice.com/Lite.
Basically you can either bookmark it or download the html file to your smart device, and then when you want to post to the Steem Blockchain you can open it in your mobile browser. From there it's almost exactly like using Steem Office. It works best with either Chrome or Firefox browser apps.
This way you don't need to use SteemIt.com or a desktop computer to post to the Steem Blockchain. Now you can post from anywhere, without exposing yourself or your machine to any Cookies, Trackers, or Terms Of Service.