When it comes to content, video is what really sets your app apart from the standard social channels.
Make plenty of it premium, leaving just enough for free users to want to upgrade, and be sure to promote your videos regularly on social media.
Add all your YouTube videos to your app, so subscribers don't have to leave to find them.
Keep plenty of videos exclusive to the app. Make sure your subscribers have a reason to stick around!
Of your exclusive videos, make plenty of them premium.
Keep just enough videos free so non-paying members know what they're missing out on.
Post videos to the Wall to encourage upgrades and interaction.
Most importantly, post snippets or trailers on socials to promote app content.