Have you tried from github.com/feruzm/esteem ? You can contribute to the project, make pull request, fork, etc. As for Steemy, they just announced about their work couple days ago. I would love to see and test their app when they release. This project eSteem-Steem Mobile was announced few weeks back and already have number functionalities, constant update and available at Google Play, Apple AppStore is reviewing app, not sure why it is taking so long though.