The Unique Voice Test
Ask of every line: could any other company have written this? If yes, rewrite it
- Difficulty
- Advanced
- Time to result
- ~months to results
- Steps
- 7
- Confidence
- 93%
A lovable brand is not a logo or a mascot; it is a voice consistently enforced at the level of individual sentences. The gate is a single question applied to every piece of copy — could this have been written by any other company? Underneath sits a mission people can stand behind, above it sits a deliberate willingness to be irreverent and take risks, and the payoff is word of mouth, press, and the cultural permission to lean into memes rather than apologize for them.
Origin
Gina Gotthilf on the Duolingo brand and voice she helped establish (crediting the team, not only herself) and now reuses at Latitud; she wrote many of Duolingo's notifications, including the passive-aggressive lapsed-user message that became a meme.
Core principles
- 01Communication is not conveying a message — it's conveying it so the listener receives, understands, and remembers it.
- 02Every piece of copy either sounds like you or sounds like anyone; there is no neutral.
- 03Voice = an unexpected quirk, a refusal to take yourself too seriously, and making the reader feel something.
- 04The mission is the floor of the brand: 'should everyone have access to great education' beats 'want to download a language app.'
- 05A voice is worth defending against new hires who think it's unprofessional.
- 06When the internet turns your brand into a joke, the joke is a gift — lean in rather than revert.
How to run it
- 1
Define the mission the brand actually stands for
Find the bigger idea nearly anyone would agree with, independent of politics or taste. Duolingo's was free access to great education. That is what people rally behind, talk about, and what makes a reporter care.
Pro tip Test it: 'TechCrunch, my app grew 20% last month' gets ignored; a story about transformed lives gets written.
- 2
Make the voice explicit as a document and a conversation
Sit down with the executive team and answer: who is our character, what are they like, how do they talk, what words do they use, what's too much, what's too little, what is and isn't a thing they would say.
Pro tip Duolingo held this conversation about Duo the owl specifically — a named character makes 'is this a Duo thing to say' answerable.
- 3
Apply the test to every line of copy
For each notification, email, and screen, ask: could this have been written by any other company? If it could, it isn't your voice yet. Apply it relentlessly, including to hires from other companies who find it unprofessional.
Watch out The larger you hire, the more the voice erodes by default; enforcement is a permanent job.
- 4
Put the mission on a communications calendar
Reserve fixed slots — Duolingo ran a social media calendar with one post a week on effectiveness (proof, with data, that the product works) and one post a week on the mission and what they were trying to accomplish. The same beats fed PR pitches.
Pro tip Effectiveness posts need data behind them; that's what moves the needle, not enthusiasm.
Watch out Behind-the-scenes team photos were tested and nobody cared. Don't confuse content you enjoy making with content that works.
- 5
Wire the mission into the product's conversion surfaces
The brand isn't only marketing. Duolingo tested paid-conversion screens carrying the line that paying makes language learning accessible to millions — and the mission framing improved the metric.
- 6
When it becomes a meme, run with it
Duolingo's passive-aggressive five-day-inactivity notification ('this doesn't seem to be working, we'll stop sending them for now') and the crying owl became memes, with users inventing their own escalations. Internally many people saw a PR problem and wanted to revert to the friendly, fluffy version.
Pro tip The voice is what grants the permission: because you were never square, joining the joke is in character rather than out of it.
Watch out This is a genuine bet, not a free win. It was contested internally, and taking risks means some people will be rubbed the wrong way — that's the price of being remembered.
- 7
Build the culture before you hire the social media star
Companies watching Duolingo's TikTok conclude they need to find that person. Gotthilf's counter: the talent is real and hard, but the TikTok only exists because the brand DNA, the irreverence, and the appetite for risk were already there. Without the culture, that hire cannot succeed.
In the wild
Gotthilf wrote many Duolingo notifications, including the message sent after five days of inactivity. Combined with the crying Duo — whose puddle size and number of tears the team A/B tested for effectiveness — and a New Year's resolution email, users began producing their own versions ('study now or Duo will eat a poisoned loaf of bread', 'the next email will be a funeral evite'). One famous screenshot pairs a Duolingo push ('you know what happens now') with a home security intruder alert.
→ Rather than treating it as a PR disaster and reverting to a friendly brand, Duolingo leaned in — and the passive-aggressive owl is now the core of the brand identity that makes its TikTok possible.
Early on the team posted photos of the team on Facebook as behind-the-scenes content.
→ Nobody cared. The calendar was restructured around effectiveness proof and mission posts, which did move the needle.
Gotthilf reuses the method at Latitud: a newsletter built on self-deprecating humor about Latinos and about tech founders, using expressions that ride close to the line of offensive without crossing it.
→ She credits the voice with how fast Latitud grew in Latin America — readers identify with it and see themselves as part of it rather than as consumers of a company.
Common mistakes
Letting new hires sand the voice down
People from conventional backgrounds find the style unprofessional and default to safe corporate copy. Without an explicit voice document and someone enforcing it line by line, the brand reverts to generic.
Panicking when the internet mocks you
The instinct to revert to being 'friendly, nice and fluffy' after a meme spreads destroys exactly the distinctiveness that produced the attention.
Hiring the TikTok person without the culture
A great irreverent creator cannot function in a company that won't approve risk. The output is a symptom of brand DNA, not a substitute for it.
Pitching press with growth stats
Reporters do not care that your app grew 20% last month. They care about a story of lives transformed — which only exists if the mission is real.
Is it for you?
Best for
Founders and marketers building a consumer or community brand who want organic word of mouth and press without a paid budget
Not ideal for
Highly regulated categories or conservative enterprise buyers where irreverence reads as untrustworthy — and for anyone unwilling to accept that some people will be alienated
From the transcript
“we constantly looked at every copy we wrote and asked could this have been written by by other companies”
“communication isn't about being able to convey a message it's about being able to convey a message in a way that the listener receives it…”
“we had like a calendar this is very tactical but like a social media calendar where like one post a week is about Effectiveness”
“we get that people think this is funny and we're just G to run with it”
“check out the behind the scenes guess what no one cares”
From the episode
Scaling Duolingo, embracing failure, and insight into Latin America’s tech scene
Gina Gotthilf (Latitud, Duolingo)