Who it's actually for.

"I'll just check one notification" turns into forty minutes gone, and the essay is still one paragraph long. The problem isn't willpower — it's that opening the app costs nothing.

This isn't medical advice, and no app treats ADHD. What follows is a plain description of how a friction-based blocker interacts with attention that works differently — including where that friction genuinely helps and where it can backfire.

A blank page offers no resistance and no reward. Your phone offers both a place to hide from the blank page and an instant hit of something. That's not a fair fight.

Flow state, once broken, doesn't just pause — for a lot of programming work it has to be rebuilt from scratch, holding the whole mental model of the code back in your head again.

Worth being clear up front: this page is about a parent managing their own phone habits, not a covert tool for restricting a child's device without their knowledge. If that's what you need, Apple's Family Sharing or Google's Family Link are the actual right tools — see below.

A blocker a teenager installs and uses themselves is a completely different thing from a blocker a parent installs to restrict them. This page is about the first kind — the second belongs on a different tool entirely.

This is the most important honest disclaimer on this whole site: Mr. Grummel does not restrict what a child can access. If you're a parent looking for that, the right tools are below.

Marking a stack of essays is exactly the kind of repetitive, effortful task a phone is designed to rescue you from — which is precisely why it's still sitting there, unmarked, at eleven at night.

A job search has no boss, no clock-in time, and no one checking whether the applications actually went out today. That freedom is exactly the problem.

A gap year offers something rare — real unstructured time. It's also exactly the condition under which a phone fills every gap left by the absence of anything else scheduled.

Revision has a hard deadline that studying-in-general doesn't, which changes the calculus completely: the cost of an hour lost to your phone three days before an exam is not the same as an hour lost in week one of term.

Deep work doesn't fail because of one big interruption — it fails because of small ones, repeated, each one costing more than its own length in recovery time.

In an office, there's a physical boundary between work and everything else. At home, that boundary has to be built entirely out of habit — and habits, unlike walls, are easy to walk through without noticing.

Most productivity systems assume the plan is the hard part. For a lot of people the plan was never the problem — opening the wrong app instead of the right one was.

"Reduce screen time" is bad advice for anyone whose job is a screen. The goal during work hours isn't less screen — it's the right screen.

A thesis has almost no external structure for most of its length — no weekly deadline, no one checking in — which is exactly the condition under which a phone wins most often.

The first five minutes of a study session decide the whole thing more often than people realize — lose them to the phone and the rest of the sitting rarely recovers.

A Pomodoro timer tells you when to focus. It doesn't do anything to stop you reaching for the phone during the 25 minutes it just told you to focus for.

Mindfulness is largely about noticing the moment before an automatic reaction. A phone check is one of the most automatic reactions most people have — which makes it a natural place to practice noticing.

A language-learning streak dies the same way most habits die: not from one big decision to quit, but from a string of "I'll do it after this" evenings that never circle back.

A course with no deadline and no grade is entirely dependent on wanting to do it — which sounds ideal until a phone offers something that requires wanting nothing at all.

Most advice about phones and sleep assumes a nine-to-five schedule with a night that starts around ten. Shift work breaks that assumption completely.

A commute is one of the few genuinely fixed, recurring windows in a day — which makes it a strangely good opportunity that a feed usually claims by default, not by anyone's actual choice.

"One more video" at 11pm rarely means one more video. It's usually the reason the alarm feels impossible seven hours later.

The first thing you do in the morning tends to set the frame for a surprising amount of what follows. For a lot of people, that first thing is currently a phone.

Reaching for the phone during burnout usually isn't the problem — it's a coping response to a problem somewhere else. Worth being honest about that before reaching for a blocking app as the fix.

There's no formal clinical diagnosis of "phone addiction" — the recognized term in the research is problematic smartphone use, and the distinction matters for what a blocking app can honestly promise.

A news or social feed has no bottom. That's not an accident — it's the entire design — and it means the only reliable place to stop it is before it starts.

A detox works for the week it lasts. The actual test is what happens the day it ends and the apps are reinstalled with nothing else having changed.

Digital minimalism starts with deciding what technology deserves a place in your life. A blocker doesn't make that decision for you — it just holds the line once you've made it.

Mobile games are often built by teams whose explicit goal is maximizing engagement. It's worth being honest that a quiz question is a comparatively small counterweight to that.

A blocker can make it harder to open a shopping app reflexively. It cannot stop a purchase once you're already in the checkout flow — that's a different problem needing a different tool.

This page needs to be direct: if you're looking for gambling self-exclusion, this is not that tool. Formal, often legally-backed self-exclusion schemes exist specifically for this, and they're linked below.

"Resetting your dopamine" isn't really how dopamine works, but the underlying goal — fewer easy, instant rewards competing with harder, better ones — is a real and reasonable thing to want.