Install and manage app extensions on iPod touch

Some apps let you extend the functionality of your iPod touch. An app extension may appear as a sharing option, an action option, a widget in Today View, a file provider, or a custom keyboard. For example, if you download Pinterest, Pinterest becomes another option for sharing when you click .

App extensions can also help you edit a photo or video in your Photos app. For example, you can download a photo-related app to apply filters to photos. See the Apple Support article How to edit with third-party apps and extensions in Photos.