When someone clicks a PocoLink on their phone, a small redirect page runs before sending them to the destination. It reads the device's user-agent to identify the OS, then checks the destination URL against a database of app deep-link schemes.
A YouTube URL like youtube.com/watch?v=abc gets rewritten to the native iOS or Android scheme. If the app is installed, it opens directly. If not, the redirect falls back to the web URL — so the link never breaks.
This matters because mobile users who land on a web-based video player often have a worse experience than those who open directly in the app. Better experience means more engagement for the content creator.