More protection than Screen Time, built for the Mac. A kid can’t turn it off.

The usual ones we hear are: creating or switching to another user account, signing out of the Apple ID, changing the system date and time, deleting and re-downloading an app, and installing a browser Screen Time doesn’t watch. Some of these have published write-ups. Kidfence is designed so those don’t work: enforcement is system-wide and survives account changes, sign-out, clock changes, reboots, and a change of browser.

Only inside Safari. Apple describes Ask to Browse as approval before a child opens a new website in Safari, and on the Mac Screen Time’s web restrictions have never applied to Chrome, Firefox, Brave, Arc, or any other browser. A standard (non-admin) account can still install any of those without a password, and Spotlight’s web preview loads pages outside Safari too. Kidfence filters at the network layer, so every browser and every app goes through the same filter, and unapproved browsers are blocked from launching by code signature.

They’re a better way to set limits, not a better way to enforce them. The limits still run on the Mac’s own clock, still show an Ignore Limit or One More Minute button unless Block at End of Limit is on, reset if the app is deleted and reinstalled, and can be slipped past by an app that launches as a background process. They also require a child Apple Account in Family Sharing and every device in the family on the version 27 releases. Kidfence blocks apps at launch from a system service, freezes them at bedtime, and works with no Family Sharing setup at all.

It works in theory but rarely in practice. Modern pages pull resources from dozens of other domains, so an allow-list means approving site after site just to make ordinary pages load, and it doesn’t pin SafeSearch on. With a search engine reachable, a query like “js games” returns playable games right in the results. Kidfence takes the opposite approach: filter everything by default at the network layer, enforce SafeSearch, block game domains, and lock the browser down, so there’s no allow-list to maintain and the search loophole is closed.

Yes, with Family Sharing you can turn on Downtime for a child’s devices from your iPhone, and when it works it’s the same idea. The difference is in the delivery and the follow-through. The toggle travels over iCloud sync, which on Macs is well documented to lag, sometimes by minutes, and your phone never confirms whether the Mac actually applied it; you find out by walking over. Kidfence’s pause is pushed straight to the Mac over a live connection, lands in seconds, freezes distracting apps in place without losing work, and reports back so you know it took effect. If Kidfence’s protection is ever turned off on the Mac, you get notified of that too.

Only if free isn’t holding. If your kid hasn’t found the workarounds and a passcode is enough, Screen Time is great. Kidfence is worth it when the Mac is a real distraction battleground and you want enforcement a kid can’t shrug off, plus app blocking, web filtering, browser lockdown, and plain-English control that Screen Time doesn’t offer.

You can run both. Many families keep Screen Time for its built-in basics and add Kidfence for stronger app blocking, web filtering, and a bedtime that freezes apps. They don’t conflict.

The phone is the one place the platform owners do this well: a managed child account with Family Sharing or Family Link is genuinely hard to disable. The Mac is the gap, and that’s what Kidfence focuses on, doing the Mac properly rather than every device half-well.