Duolingo puts one giant "Get started" in front of everything

The psychology

Why it nudges

Duolingo removes friction from the first step: one obvious action, no form, no price on the page. The quieter "already have an account" button keeps returning users moving without competing for attention. The "backed by science" section leans on authority. Whether this layout lifts sign-ups for Duolingo is not public.

● Strong evidence · More on friction (principle), with sources →

Context

A freemium learning app whose web homepage exists mainly to start a new learner or send an existing one back in.

Honest nudge or dark pattern?

Honest nudge

Honest nudge: both paths are clearly labelled and nothing is hidden. "Research shows that it works" is Duolingo's own claim; we haven't checked it.

Steal this, honestly

Give the homepage one primary action and make the secondary one visibly quieter.
Delay forms and prices until after the first click if the product is free to start.
If you claim research backing, link to it.

What to test: Single CTA vs two equal-weight CTAs. Measure started sign-ups and day-7 retention.

Next: run it on your product

Apply this with your agent

Take the steps above into your own flow. The prompt carries this teardown, the honest-vs-dark line and the steps.

You are helping me apply a behavioural-design pattern ethically.

Pattern: Duolingo: Duolingo puts one giant "Get started" in front of everything
Bias: Friction (principle): Not a bias: small hassles strongly change behaviour. Make the desired action easy.
Why it nudges: Duolingo removes friction from the first step: one obvious action, no form, no price on the page. The quieter "already have an account" button keeps returning users moving without competing for attention. The "backed by science" section leans on authority. Whether this layout lifts sign-ups for Duolingo is not public.
Our verdict: Honest nudge. Honest nudge: both paths are clearly labelled and nothing is hidden. "Research shows that it works" is Duolingo's own claim; we haven't checked it.
Source page: https://nudgeswipe.com/examples/duolingo-homepage-two-buttons-one-promise/ (JSON: https://nudgeswipe.com/api/teardowns/duolingo-homepage-two-buttons-one-promise.json)

Rules: say a brand "uses" a tactic, never that it "worked"; outcomes are not public unless the company published them; no invented uplift estimates; flag mixed evidence. Honest nudge = true, visible, easy to reverse, and in the user's interest. Dark pattern = hides costs, fakes scarcity or popularity, shames, or makes leaving harder than joining. Quote company-published results as "X reports", with the source link, and don’t generalise them. Don’t cite retracted or failed-to-replicate studies as support (e.g. Ariely & Wertenbroch 2002). Don’t state study figures unless they’re on this page or in a source you can link. If an idea crosses the line, link the matching deceptive.design pattern.

Tasks:
1. Ask me for my product, the flow (URL or screenshots) and the goal.
2. Audit where this pattern already appears, or could, in that flow.
3. Propose 2-3 ethical experiments: hypothesis, variant copy or UI, primary metric, and a guardrail metric (refunds, complaints, cancellations).
4. Flag every dark-pattern risk and say how to stay on the honest side.

Open in ChatGPT Open in Claude Open in Grok Open in Cursor

ChatGPT, Claude, Grok and Cursor open with the prompt filled in (it is also copied, in case the prefill doesn't load). Gemini and Codex don't support prefilled links, so the prompt is copied and the app opens; paste it in.

Sources

Our capture of duolingo.com, 16 Oct 2026
Behavioural Insights Team (2014), EAST: four simple ways to apply behavioural insights. www.bi.team/publications/east-four-simple-ways-to-apply-behavioural-insights/

Duolingo puts one giant "Get started" in front of everything

Why it nudges

Honest nudge

Apply this with your agent

Related teardowns

Notion labels one plan "Recommended" and leads with logos

Trainline replaces a list of Railcards with three questions

Octopus leads with Which? and 891,063 reviews

5 new nudges, every Friday