Most App Blockers Do Not Work. The Research Is Pretty Clear About Why.

We make an app blocker. What follows is the best research we have found on whether app blockers actually do anything, and it is not flattering to us or to anyone else in this category.

We are publishing it anyway. We would rather you know.

The experiment nobody in this industry quotes

Marotta and Acquisti ran a randomized field experiment on a crowdsourcing platform where people were doing paid tasks with real money on the line. Everyone got the same tool: Freedom, one of the best known blockers there is.

One group had blocking imposed on them. Facebook, Twitter, Instagram and YouTube, switched off on a fixed schedule, six hours a day, five days a week. No say in it.

The other group got the exact same app and decided for themselves whether and when to block anything. Which is to say, that group got the product you use. And the product we sell.

The imposed group completed about 8 more tasks per hour, earned about $0.80 more per hour, and finished the key week with roughly 24% higher earnings per hour than the control.

The choose-for-yourself group showed no significant change. Not a smaller effect. No significant effect on any measure.

Same software. Same tasks. Same kind of people. The only variable was who held the off switch.

The detail that should end the argument

In the choose-for-yourself group, 30% installed the app and never used it once. Among the 70% who did use it, blocking ran about 1.5 hours a day on average, and only around 10% of them ever scheduled a recurring session.

So the researchers reran the analysis on just the people who actually used the thing, in case the non-users were dragging the average down.

Still nothing.

It was not that some people ignored the tool. It was that using it on your own terms did not work either. The authors' phrase for what happened is that participants "failed at effectively self-committing themselves."

Why this is bad news for us

Almost every screen time app on the App Store is opt-in by default, and ours is no exception. You install it. You set it up. And then every single time you hit the wall, you get to decide whether the wall stays.

A blocker you can dismiss in two taps is not an intervention. It is a notification with extra steps.

This is also the best explanation we have for something that always puzzled us: why free Screen Time and Digital Wellbeing did not wipe out this market. Apple and Google shipped the version you can turn off. People went out and paid for a version they cannot. If you are shopping around, that is the question worth asking of every app on our free blockers roundup, including the paid ones.

The part the strict-blocking crowd leaves out

Forced blocking is not free, and we are not going to pretend otherwise.

Mark, Iqbal and Czerwinski put 31 information workers through two weeks with Freedom. Self-assessed productivity went up. Focused immersion went up. Good so far.

But 16 of the 31 reported more stress. The people who got more stressed scored significantly higher on impulsivity measures and reported feeling less in control of their work. Some of them stopped taking breaks at all and just ground through the day.

Hard blocking works, it can also make you miserable, and it is hardest on exactly the people who need it most. Anyone selling you strictness without that sentence attached is selling you something.

Two things we should say plainly

Both of those studies are from 2017. That is a real weakness and we would rather flag it than bury it. The category has grown enormously in eight years and the evidence base has not kept up. Nobody has published anything serious on whether blocking still holds past six weeks, which is roughly the point where every one of us stops paying attention to our own settings.

And the crowdworkers were doing paid piecework, not creative or strategic work. A randomized field experiment found this. Science did not prove it. Those are different claims and we are making the first one.

What we take from it

The variable that matters is not how hard the block is. It is who decided, and when.

A block your past self chose is commitment. A block your employer chose is surveillance. Same wall, completely different thing.

Which is the whole reason we think difficulty should be a dial rather than a default. Something flexible when you are just trying to be a bit more deliberate. Something locked when you already know exactly how tonight is going to go. The research says the effect lives at the strict end. It also says do not start there.

What to do tonight

Pick one recurring failure. Not your whole life, not every app, one window. The 11pm scroll. The first twenty minutes of the workday. Whichever one you already know about.

Set the strictest mode you can honestly live with, for that window only, and put the off switch somewhere your 11pm self cannot reach it. Then leave the rest of your phone completely alone.

Category-wide restriction is how people end up stressed, resentful and back where they started in about nine days.

Here is the part nobody in our industry wants printed. Most of this category sells reassurance. You buy the app, you feel like someone who is doing something about it, and the feeling is the actual product. If your blocker has never genuinely annoyed you, it is not working. It is decorating.

Sources: Marotta and Acquisti, Online Distractions, Website Blockers, and Economic Productivity: A Randomized Field Experiment (WEIS 2017); Semantic Scholar entry for the same paper; Mark, Iqbal and Czerwinski, How Blocking Distractions Affects Workplace Focus and Productivity (UbiComp 2017); Some Middle School Students Want Behavior Commitment Devices (But Take-Up Does Not Affect Their Behavior); Trends.vc: screen time blocking apps, forced versus opt-in; New Scientist: Would you pay to block your own internet connection?. Disclaimer: This article is for informational purposes only and does not constitute medical, psychological, or professional health advice. If you have concerns about mental health, attention, or device usage, please consult a qualified professional. BreakOff is a productivity and wellness tool, not a medical device.