Picture a row of circles. Each one is an hour. Every time you slip into Instagram for more than a few seconds, one of them turns black.

That's the whole idea behind Oh My Hours, an iPhone app that treats your day like a scoreboard and your scrolling like a foul. There's no Android version yet. Wired's David Nield tried it and came away a fan, which says something, given that most of us keep a graveyard of screen-time apps we deleted out of shame.

How Oh My Hours counts your losses

Setup is quick. You pick which apps count as distractions, either by category (social media, games) or one at a time. Use any of them past a set threshold and the current hour is marked lost. The default threshold is seconds, not minutes.

Harsh? Yes, on purpose. Nield argues the strictness is necessary, since a looser rule would let you burn your "free" scrolling time the moment each hour rolls over. Even so, he caught a quirk in his own head: once an hour was already blackened, he felt tempted to cram in extra mindless scrolling before the clock moved on. It's the parking-ticket logic. You've already been fined, so why not stay a while? The shame meter, it turns out, also hands out permission slips.

There are a few other levers. You can set quiet hours, and a single slip inside that window blackens every hour in the block, not just one. You can reset an hour if the app got it wrong (a stray thumb, say). A CSV export lets you pull your stats out for your own analysis.

The app is free to start. Pay $10 a year, or $20 once for a lifetime license, and you unlock custom definitions of a lost hour or day, longer thresholds, and month and year views. Those longer views are where the sting lands, according to Nield. One bad afternoon is forgivable. A calendar full of black dots is a portrait.

I think the design is smart. Most screen-time tools report minutes, a number that feels abstract and is oddly easy to shrug off. Hours lost to a feed is a different framing, one that casts your day as something you had and spent badly.

What else is on the shelf

Oh My Hours isn't alone, and it isn't the gentlest option. Apple's Screen Time and Google's Digital Wellbeing already ship on phones, and a crowd of third-party apps come at the problem from other angles, as the Wired roundup lays out.

One Sec (Android and iOS) inserts a breathing exercise before an app opens, then lets you decide whether to continue or back out. Nield calls it a small tweak that works surprisingly well. It's free to begin, and $20 a year buys full app blocking and better time tracking.

Forest (Android and iOS) grows a virtual woodland the longer you leave your phone alone, and its makers put money toward planting real trees. The basic focus timer costs nothing. Extras start at $6 a month.

ScreenZen (Android and iOS) is free and offers a menu of speed bumps: timed pauses with motivational messages, math problems, and ordinary app and timer blocks. It's built to make you open apps on purpose rather than by reflex.

So the choice comes down to temperament. Some people respond to friction, some to rewards, and some, apparently, to a grid of black circles judging them.

Whether guilt keeps working is the open question. Shame motivates for about a week, give or take. What counts is whether anyone is still opening those month and year views in March, and whether the blackened hours start to shrink. If they do, the bleakest-looking app in the bunch may turn out to be the most honest. If they don't, well, there's always the graveyard.