There is a Steemit app in Google Play called eSteem and so far it doesn't disappoint. You can basically do whatever you can on the Steemit website such maintainyour settings, post an article, upvote, etc.
It is lightweight, user-friendly and its current rating is at 4.4 stars.
There are room for improvements such as having a help module for those not-too-easy-to-grasp fields. Or maybe some hints for fields that are a bit techy.
Overall though, it's very convenient to use and worth a try.
