Parent-picked video allow-list
Watchly
Yes
You hand-pick every video, playlist, or channel. If you did not add it, your child cannot watch it.
Google Family Link
Delegated to YouTube apps
Family Link itself does not approve videos — it routes kids to YouTube Kids/supervised YouTube. Only YouTube Kids’ Approved Content Only is a true allow-list, and it is clunky and ad-supported. Watchly is a clean per-video allow-list across ages.