Smart app banners make the process for subscribing to a podcast really easy for iOS listeners and have been proven to be an effective way to boost your subscribers.
Omny.fm pages can now display a smart app banner for your podcast automatically with the click of a checkbox. Here's how they look on an iphone (click image to go to page):
To activate this on your show, you first need to check that your Apple Podcasts subscribe link is set up by following this guide.
Once that's done, you will have the option to turn on the smart banner app here under Program settings > Advanced settings: