What is a streak? Snap? Whoop? Duolingo? Wordle? hmm...
You know the one. Little number, top corner. You've probably looked at it today.
We make one too. Long Story Short, a word game, one sentence a day. It has a streak, and ours is meaner than most of the ones above. We'll get to that.
You'd think somebody agreed on this at some point. Nobody did. Different companies, different countries, no contact, same idea.
So why does it work? And what is it doing to you?
the colour on this page is heat. a streak gets hotter the longer it runs, which is what Chess.com actually does with its flame.
365 squares. One a day. Nothing fills them in except you, every day, including Christmas.
Last day of 2025. 43 million people opened Duolingo and were at least a week in.
That's not a guess. It's in the annual report they file with the regulator.
Not a week. A year. About one in three of everyone who opened it that day.
Not one of them missed a lesson. Not one day.
Duolingo Inc., Form 10-K for the year ended 31 December 2025.
5 million, then 10, then 15. And the share of people who show up every single day went from 23% to 39%.
Whatever it is, it's working.
You fall asleep on the sofa. That's it, that's the whole reason.
You'd think it goes back to 364.
A fire. Not a chain, not a bar filling up. A fire, which goes out.
I'm not reading anything into it. This is just what they each write on their own help page.
Three didn't. Apple drew rings. Snapchat put an hourglass next to its fire, in case the fire wasn't enough. TikTok gives you a pet.
1932. A man called Clark Hull notices his rats run faster at the end of the maze than at the start.
He calls it the goal gradient. For about seventy years it stays a thing about rats.
Then in 2006 three researchers take it to a café. Buy ten coffees, get one free. They timed the gaps between visits.
The two stamps were free. Everyone still had to buy ten coffees and everyone knew it.
They went faster anyway.
That's all a streak counter is. It gives you nothing. It shows you a number you already earned, and that turns out to be enough.
One more thing they found. Once people got the free coffee, they slowed back down.
Which is fine, because a coffee card finishes. A streak doesn't. There's no free coffee at the end of a streak, so you never get to slow down.
Every one of these had to pick what happens when you slip up. They all picked something different.
Apple lets you stop for up to ninety days and keep the award. In their words: you can pause your Activity rings for up to 90 days without breaking your award streak.
Added in watchOS 11, September 2024, after a decade of the unbroken ring.
Chess.com gives you two days. They call it paused, not lost. It still goes on day three.
Babbel hands you two free freezes every Monday and uses them for you. They don't roll over.
Calm's help page tells you to fix a broken streak by adding a session on a day you didn't meditate.
So you sit there editing a record of a thing you didn't do. And that's their advice.
Duolingo sells a Streak Freeze. It only works if you bought it before the day you missed.
So, insurance.
Snapchat gives every account one free Streak Restore. After that, the price shown on your device is the price that you'll be charged, and the cost to restore a Streak will vary in different countries.
Whoop has nothing. Someone asked support what happens if the charger dies in the night. Streak resets. Can't be brought back.
The band was off, so as far as Whoop is concerned you weren't there.
Long Story Short is in this column too, and ours is harsher than Duolingo's. Duolingo asks you to turn up. Long Story Short asks you to be right. Get it wrong today and the number is zero. No freeze to buy, no grace period, nothing.
one square is about three thousand streaks
5.6 million Wordle streaks ended that morning, all on the same word.
The New York Times counted. Wordle got played 5.3 billion times in 2024, and 2.8 million people a day open with adieu. Didn't help anybody on the fifteenth of October.
19 May 2016. GitHub deletes the two counters on every developer profile, the current streak and the longest one, with no announcement at all. The green grid stayed where it was. Only the numbers went.
Three researchers spotted it and treated it as an experiment somebody else had already run for them. 433,138 developers, 290 million contributions, before and after.
Moldon, Strohmaier and Wachs, ICSE 2021.
Streaks that got past a fortnight used to average 26 days, and afterwards 22. Getting all the way to a hundred days was more than twice as likely before the change.
For developers who hit streaks of twenty days or more, the share of their work landing on a Saturday or Sunday fell, and it held at every window the authors tested, p < 0.001. Their words: a small but significant drop.
Nobody told them to stop working Saturdays. The number just wasn't on their profile any more.
2009, University College London. 96 people picked one small daily thing and did it for twelve weeks. A piece of fruit with lunch. A glass of water. A short run before dinner.
Every day they scored how automatic it felt yet. Still having to remember, or just something you do now.
That score climbs, then flattens out. For most people it took about 66 days.
Some got there in 18 days, one took 254. So the 21-day thing everyone repeats is not from this study, and I can't find the study it is from.
Then they went looking for the days people skipped. 140 of them.
Skipping a day set people back by less than one day.
Not to zero. Not to the beginning. Back by less than the day they missed, and the next day they were where they would have been anyway.
That's the whole cost. Your fruit-with-lunch habit doesn't care that it was a Tuesday. Only the counter does.
All of this is off their own help pages. Nothing paraphrased, nothing leaked. September 2026.
Apple spent a decade teaching people to close three rings every day. Published a study proving the nudge works, on 160,000 wrists. Then in September 2024 they shipped a way to stop for ninety days and lose nothing.
Duolingo and Snapchat are still selling the fix. And you can now just install one of these. There's a kit that ships a streak calendar with native streak freeze support in the box. You could have one running by tonight.
Someone writing a how-to guide for building these things, earlier this year, included a test for the people building them.
“A simple test: whether your products make money by selling solutions to anxiety that your product created.”
15 million people didn’t miss a day last year. The science says the day wouldn’t have mattered.
Long Story Short is on that list too. Miss one, or just get it wrong, and you're back to zero. We don't sell you a way out, which is either principled or lazy depending on the day. Either way, the same question applies to us.
A word game. One real sentence a day, and you say the same thing in exactly five of its own words. Wordle colours, two minutes, no account, no app.
Play today'sIt keeps a streak. Ours is in the no-mercy column above, and we're not selling you a way out of it.