You can request Dropsource publishing services for any Premium project you have in your account. When you are satisfied that your app development is complete and have carried out any testing you require, build the app if you do not already have a build you want to publish.
When your build is complete, it will appear in My Builds in the editor.
Select Publish or Download this Build.
To have your app published by the Dropsource team, choose Request Service in the App store deployment service section.
Click Confirm Request to submit. You will see a confirmation message. The Dropsource team will be in touch with further steps to proceed with your app deployment.