A dedicated blocker fits when opening YouTube Music has become a route into watching, not just listening. If you're honest that a song search regularly turns into a video you weren't looking for, a default-off rule removes the opening that leads there. If you are still deciding whether a blocker is the right tool at all, see our iPhone app-blocking options.
With Fella, add YouTube Music to the apps you want blocked. It stays unavailable by default while the apps you did not select remain accessible.
Use the emergency unlock only for a practical need. Each blocking session includes one 5-minute emergency unlock, enough to start a specific playlist before a workout or a call. When the five minutes end, YouTube Music locks again automatically.
That is the trade-off, and it's worth restating clearly. Blocking YouTube Music blocks the app, including the moments you genuinely need quick, intentional access to music. If that's most of your usage, a scheduled Downtime window for specific browsing-prone hours may serve you better than an all-day default block.