Thank you Craig for the compliment... :)
I am sure there will be many mobile apps on top of Steem soon, but happy to be the first! And with eSteem desktop and continuous development of mobile app, eSteem will contribute to the user growth and bring more utilities, like marketplace, exchange, entertainment, etc...
If I was going to develop a mobile app, and first looked at esteem, I would feel intimidated, and see 1 year of work ahead of me just to reach where esteem is now, and by that time esteem will be 2 more years ahead in development, you're a mad scientist :)
He is a Elon Musk on Steemit @craig-grant😊.....check my non-techy post Becoming Sandy Wexler at your free time boss!