How about 'getting the word out' by talking about your startup and app on podcasts. You can start with my daily show called The App Guy Podcast. Subscribe On iTunes
https://itunes.apple.com/podcast/the-app-guy/id771670010?mt=2 then contact me through my website http://TheAppGuy.co

As the host of 'The App Guy Podcast', I can introduce you to a few good developers ranging from inexpensive locations to $100 per hour top rates. As a quick guess, this type of app will start from $900 using a cross platform solution (Like Titanium Studio) to $5000 for Objective-C apps written on xCode
Let me know if you want an introduction by contacting me through my website or podcast
Paul Kemp - The App Guy Podcast
http://TheAppGuy.co/