What's up with the Duolingo app icon? Melting, sweating and sick Duo explained
The Duolingo app icon changes because Duolingo uses it as a reminder. Duo, the green owl mascot, has been shown melting (October 2023), aged and exhausted (April 2024), sick and sweating (August 2024) and dead (February 2025). None of these is a bug or a sign that your phone is broken. Each is a temporary icon that ships with an app update, and Duolingo has said the goal is to get learners to open the app and do their lesson.
This page explains each version of the icon, what Duolingo has said about it, why some people see it and others do not, and what you can and cannot change.
Why is the Duolingo app icon melting?
The melting Duolingo icon is a limited-time design that Duolingo shipped in October 2023 to get people to open the app. Duo appeared to drip and slide down the icon, which many users read as melting or heavy sweating. A Duolingo spokesperson told Distractify:
"The melting Duo you see is a new app icon that learners will see for a limited time. If learners have the latest version of the Duolingo app downloaded, they should see Melting Duo as the app icon. The purpose of the new app icon is to encourage learners to open the app."
Two details from that statement matter. First, the icon came with an app version, so it only appeared after an update. Second, it was never meant to stay. The design works through curiosity: a distorted version of a familiar icon stands out on a home screen full of static logos, and people tap it to find out what happened. Duolingo said on its website that same week that it was squashing bugs in the app, and reports at the time noted that the icon also nudged people to update to the latest version. The melting owl was the first widely noticed icon change, and it set the pattern for the ones that followed.
Why does the Duolingo icon look sweaty or sick?
The sweating, sick Duolingo icon appeared at the end of August 2024 and showed Duo with red eyes, a sweaty brow and a runny beak. It is the version behind most searches for a sweating Duolingo icon. On iPhone, Duolingo's widget matched it, at one point showing Duo lying on his back with the line "Tap to revive!"
A Duolingo spokesperson described it as a playful reminder to complete lessons, saying that "Duo is quite literally sick of reminding everyone to do their lessons," and that the illness is not contagious as long as learners keep their streaks, according to We Got This Covered, which cited the statement given to iNews.
If you searched for a melting or sweating Duolingo icon, you have probably seen one of these two designs. The 2023 melting icon looks like Duo is dripping, while the 2024 sick icon adds sweat to a feverish owl. Both are deliberate, both are temporary, and both appear only on recent app versions.
Every Duolingo icon change so far
Duolingo has changed Duo's expression on the app icon several times, and every change was tied to a campaign about doing your daily lesson. The table lists the versions with dated reporting behind them.
| Icon | When it appeared | What Duolingo said |
|---|---|---|
| Melting Duo | October 2023 | Limited-time icon to encourage learners to open the app |
| Old, exhausted Duo (wrinkles, under-eye bags) | April 2024 | Duo was exhausted from reminding learners to do their lessons |
| Sick, sweating Duo (red eyes, runny beak) | Late August 2024 | Duo was sick of reminding everyone to do their lessons |
| Dead Duo | February 11, 2025 | Part of a brand campaign announcing that Duo had "died" |
The February 2025 campaign was the biggest. Duolingo announced on social media that Duo was dead and joked that he "probably died waiting for you to do your lesson." A spokesperson told NBC Los Angeles that the app icon reflected the loss with "Dead Duo," and Entrepreneur reported that the company confirmed it was a marketing campaign.
Why don't I see the new Duolingo icon?
You don't see a new Duolingo icon if your app is out of date, because each icon ships inside an app update. Duolingo said this directly for the melting icon: learners on the latest version see it. If your friends see a changed Duo and you see the normal owl, update the app.
- Open the Google Play Store (Android) or the App Store (iPhone and iPad).
- Search for Duolingo, or open the official listing: Duolingo on Google Play or Duolingo on the App Store.
- Tap Update if the button is shown, then open the app once.
- Return to your home screen. Some launchers cache icons, so a restart of the phone can help if the old icon stays.
The reverse also applies. Once a campaign ends, a later update brings back the regular owl, so a changed icon that stays for weeks is usually a sign that the next update has not been installed yet. On a computer, Duolingo runs in the browser at duolingo.com, where there is no home screen icon to change.
Can you change the Duolingo app icon back?
Most Duolingo users cannot switch the campaign icon off; it changes back when Duolingo releases the next update. Reporting from August 2024 by Outlook India described a built-in icon choice for some accounts only:
- Super and Duolingo Max subscribers could turn on a subscriber app icon from the profile settings (tap the Duo icon at the top right, scroll to Super App Icon or Max App Icon, then tap Turn On).
- Streak Society members, who have a streak of at least 50 days, could pick an orange Duo with burning eyes in the same place.
Menu names in Duolingo change between versions, so check your own profile settings for an app icon option before you look elsewhere. If you want to know what the paid plans add, see this comparison of Duolingo Max and Super. On iPhone, you can also put any app behind a custom icon with Apple's Shortcuts app, as explained in this guide on changing app icons on iPhone. This changes only the home screen shortcut, not Duolingo's own icon.
FAQ
Is the melting Duolingo icon a virus or a glitch?
No. The melting, sick and other changed icons come from Duolingo itself through official app updates. If you installed Duolingo from Google Play or the App Store, the icon change is expected.
Does the Duolingo icon change only for me?
No. The campaign icons were rolled out widely through app updates, which is why so many people noticed them at the same time. Duolingo's statements tied them to reminding all learners to practice.
How long does a changed Duolingo icon stay?
Duolingo describes these icons as limited-time designs and has not published fixed end dates. The regular owl returns with a later app update.
Related: How Duolingo Max uses GPT-4 for learning, How to organize your Android home screen, How to hide recently added apps on iPhone
I installed but I see the Duolingo is melting and got scared me and I got deleted I was in Italy form
This is… newsworthy?
Seems like a pretty good article to me. If I were using Duolingo and wondered why my icon was messed up, this article would give me the answer.
As to the icon changing though, if I did use the program and it changed the icon on me, I’d probably uninstall the app. I don’t appreciate an app pestering me to login to it.
Eh, it’s low hanging fruit and incredibly easy to produce article – seems lazy to me, that’s all.