Put Your Phone Down › Settings & Tools

Digital detox apps compared:
hard-limit apps and time-promise apps

I installed and deleted three detox apps. They all looked alike until I used them, and then they split cleanly in two: apps that make other apps unopenable, and apps where you set a time and keep it. Knowing which kind fit me would have saved all three deletions.

The short answer

Digital detox apps split into two kinds. Hard-limit apps make chosen apps or websites unopenable for a set period. Time-promise apps set a length, 10 minutes or an hour, and score whether the phone stayed down for it. The first fits someone whose problem is one specific app and who'd rather not depend on will. The second fits someone who doesn't want to delete anything and wants to clear a whole stretch, like the evening. Sumbi is the second kind.

Two phones side by side, one showing a padlocked app icon and the other showing a serene underwater diving timer
A wall and a promise are different tools.

What splits the two kinds?

A hard-limit app is a wall: the short-form app won't open from nine to morning, or locks after 30 daily minutes. A time-promise app is an agreement: 30 minutes down, starting now, and the kept-or-broken result is what remains. I ran the wall first. I try to get my phone into the drawer after nine, and one night I caught myself watching the same feed in the browser the wall didn't cover. I deleted the wall.

Hard-limitTime-promise
What it doesMakes chosen apps and sites unopenable for a set periodSets a length and holds you to keeping the phone down
Its unitThe appThe stretch of time
The shape of failureThe workaround: the same feed through another app or the browserOpening the phone mid-promise, breaking it
Its strengthThe wall stands even in the will-less momentsNothing gets deleted, and anything can be watched: only the time counts
Its weaknessOne detour and the wall is scenery, and urgent moments can't get throughNothing happens unless you press start
Who it fitsSomeone whose problem is one specific appSomeone clearing a whole stretch, like the evening

Neither is the better kind. Whether the problem is an app or an hour of the day decides which tool fits.

How does a time-promise app actually run?

Take Sumbi as the worked example and the structure shows. You pick a length between 10 minutes and 2 hours, called a dive, and start. Turning the screen off or locking the phone is fine mid-dive. Your remaining breath shrinks only while another app is open, and you pre-choose that breath: 60, 30, or 10 seconds. Breath at zero means the dive failed. An incoming call never counts as surfacing.

The tell of the whole category is there: not one app gets walled. Watch whatever you want, whenever: the only question is whether the phone stayed down for the promised time. So there's nothing to work around. The cost is that pressing start belongs to you.

How do you pick your kind?

Three questions mostly settle it. I landed on the right side of all three.

One more thing to check while choosing: what the app calls failure. Apps that shame or penalize a miss don't survive on a phone long, because a failed day was still a day you tried to put the phone down.

If the promise kind fits you, the first promise is 10 minutes

Sumbi is the time-promise kind: set the length, put the phone down. Start a 10-minute dive and the screen can go dark, your remaining breath shrinking only while another app is open. No app gets walled, so there's nothing to delete and nothing to sneak around.

Try your first 10-minute dive →

Four checks before installing any of them

Can you get through in an emergency?

Being unopenable at urgent moments is the hard-limit kind's strength and its flaw. Check whether an emergency unlock exists, and how tedious it is: too easy and it isn't a wall, too hard and the app gets deleted. The promise kind opens freely and just logs the break, so it skips this problem.

Are incoming calls exempt?

Whichever kind, confirm that incoming calls get through. With a kid, a tool that can't take the school's call is unusable. I skipped this check once and deleted that app in two days.

How does it show a failure?

Red screens and alarm sounds at a miss make the app unpleasant to open within days. Apps that log the miss and offer the next start are the ones that stay. Screenshots won't show you this: one real failure will.

Does it promise features that don't exist?

Filter out lines about focus improving or habits rewiring in days. An app can measure time or stand in a doorway. The changing is done by the person, with the app nearby.

Three deletions taught me my kind was the promise, not the wall. Plenty of people are the reverse. Either way, the apps deleted while finding your kind weren't waste.

Frequently asked questions

Do hard-limit apps really make apps unopenable?
Most work through the device's accessibility or screen-time permissions, so revoking the permission in Settings unlocks everything. It's not truly unopenable: it's opening made many steps long. How annoying those steps are varies by app.
How are detox apps different from built-in Screen Time and Digital Wellbeing?
The built-ins are close to hard-limit tools the device ships with. Separate apps add things like timed promises or doing it with a partner. The built-ins are enough for many people, so try them first and pick an app when a gap shows.
Can I use both kinds together?
Yes, they don't overlap. Some people wall off one short-form app with a hard limit and clear the evening with a timed promise. Just don't start with both at once, or you won't know which one is working.
Is the gap between free and paid versions big?
The core features are usually enough on free tiers. Paid mostly adds multi-device sync and finer settings. Run the free version for a week before paying, and watch whether you open it daily. An unopened free app stays unopened as a paid one.
Do detox apps definitely cut phone use?
An app measures time or stands in the way: the cutting varies by person. Some surveys show reduced hours among tool users, and plenty of people rebound after deleting the app. Read the app as a tool that makes starting easier, not a cure.

Menu names and locations can vary a little by device model and software version. This article is general information, not medical advice.