Short answer: On iPhone, Screen Time (Family Controls) blockers (Hardcore Focus, Opal, Jomo, ScreenZen, Brick’s software layer) hide apps at the OS level with no traffic detour. VPN-style blockers (Freedom) install a local filter so they can also catch websites and other platforms. Pick Screen Time if you only need iPhone and hate VPN profiles. Pick a local VPN if you need Mac/Windows too.

How Screen Time blockers work

Apple lets an authorized app apply shields to apps and categories you pick. The blocked app never launches. Nothing is sent to the blocker vendor. Apple’s cap is 100 apps per blocker.

Hardcore Focus uses this path. Details: iPhone app blocker / Shield.

How VPN blockers work

Freedom (and some desktop tools) create a local VPN configuration. Freedom documents that traffic does not leave the device — the profile is a filter, not an exit node. You still have to trust that claim and live with a VPN toggle in Settings.

The payoff is cross-device: one list for phone and laptop.

Privacy

  • Screen Time API: no extra network path. The vendor never sees which sites you hit. Hardcore Focus also has no account.
  • Local VPN: depends on the vendor’s architecture. Read their docs. “On-device” is the bar; “our cloud DNS” is a different product.

Bypass

Both can be undone. Screen Time: revoke the permission. VPN: delete the profile. Hardware (Brick) is the only model that is not just another Settings pane. Can you bypass iPhone app blockers?

Which should you use?

  • iPhone-only, no account, focus sessions: Hardcore Focus or Jomo/Opal if you want a dashboard.
  • Phone + laptop: Freedom or Jomo’s Mac app.
  • I disable everything in Settings: Brick.