Double Feature combines snippets across two years as long as they're on the same day and have the same orientation.
This feature is available on our iOS app only.
On the iOS app:
Open the mashing screen
Select a date range that has snippets captured from the same day in the previous year
Tap on "Double Feature" to enable it
It will show two snippets side by side for the days you selected that have snippets captured on the previous year and have the same orientation
If it doesn't detect any snippets captured on the previous year, it will fail to build the mash and show this message instead: