Short answer: Yes. Almost every iPhone app blocker can be bypassed in Settings → Screen Time by turning the app’s access off (or deleting the app). “Strict” modes close the in-app unlock, not the operating system. A physical NFC tag is the only common design that stays blocked when the phone is in another room from the key.

The universal hatch

Screen Time blockers work because you granted Family Controls. What you grant, you can revoke. That is true of Hardcore Focus, Opal, Jomo, ScreenZen, and Brick’s software layer.

If a marketing page says “impossible to bypass,” they are skipping this sentence.

What the strict modes actually do

Tool	Closes	Does not close
Hardcore Focus No Bypass	In-session unlock button	Settings → Screen Time, deleting the app
Hardcore Focus 15-minute bypass	Nothing — it is an unlock, then re-blocks	Same OS hatch
Jomo Strict Mode	Edits, pauses, sometimes Settings during a session	A determined Settings trip still exists on iOS; treat vendor claims as “harder,” not “impossible”
Brick	Unlock without the physical tag	Losing the tag / carrying it everywhere
one sec	The twitch (a pause)	Waiting out the pause
Opal Deep Focus	Casual disable of a rule (when you pay for it)	The Screen Time permission

Brick comparison: vs Brick. Shield design: app blocker.

So is a blocker pointless?

No. Most unlocks are not “I will open Settings and revoke an entitlement.” They are “just for a second.” That is the moment worth buying for. The 2023 PNAS one sec study (~57% fewer problematic opens) is about friction, not a prison.

If you are the person who will spend five minutes dismantling the permission, buy Brick or put the phone in another room. Do not buy another software subscription and expect a miracle.

How Hardcore Focus talks about this

We tell you the hatch. Then we give you No Bypass or a timed 15-minute unlock — not an AI argument. How Shield works. Best blockers 2026.