You can replicate one of your existing campaigns if you want to use it on another app, OS or website. It is a great tool to save time and to reuse the settings and targeting that were already successful.
The campaign is saved as a draft or is already over:
You can duplicate your campaign from the Actions menu, next to your campaign's name. The campaign duplication will work between iOS, Android apps and websites.
The campaign is live:
The "Replicate" button is in the Review section, down the page.
Having troubles replicating your campaigns?
Check out this article: Why can't I replicate my campaign?