To publish your app on the stores, you first need to have your own developer accounts. You need to register on https://developer.apple.com to publish your iOS app and on http://developer.android.com to publish your Android app.
If you don’t want to go through the generation and submission processes, you can choose the optional “Google Play submission” offer. For an extra $50, we will take care of all of the submission work for you, but you will still need to have your personal developer accounts. The offer is only applicable for submission of your Android app to Google’s app store. Apple only allows the owner to publish their apps with their own developer account.