I am a successful music producer and publisher of iOS apps. My company, The App Ward, has over 5 MILLION downloads and became a 6-figure business in under 2 years. I can help with App Store optimization, monetization, how to hire freelancers, give input on app ideas, or answer any other questions about publishing apps for iOS. I have experience publishing on Google Play as well.
Check out my blog at www.winningwithapps.com
You can do this by using a server backend such as Parse. They have a free SDK. There are other similar options and I believe apple is rolling out the same thing in iOS 8 with CloudKit.