Teardowns › Homepages & product pages › Availability heuristic
Trading 212 shows a sample "Your earnings" widget from share lending, under a risk warning
Step by step
- 1Zero-price effect
"Commission-free investing for everyone" with "Other fees may apply."
- 2Social proof
"Trustpilot TrustScore 4.6 105,806 reviews".
The psychology
Why it nudges
A concrete, easy-to-picture earnings example makes the outcome feel likely (availability). Zero commission is a strong price hook, and the review count adds social proof. The required risk warning is not counted as a nudge. Whether these lift sign-ups for Trading 212 is not public.
Company claim: The Trustpilot TrustScore and review count are the company's own claims, as shown on its page. We haven't verified them.
● Strong evidence (provisional) · More on availability heuristic, with sources →
Context
A UK investment app. The earnings panel is illustrative; the page does not say whose figures they are.
Honest nudge or dark pattern?
Grey area
Grey area: an unlabelled sample earnings panel can read as typical results. The risk warning is prominent.
Steal this, honestly
- Label example figures as examples.
- Keep the risk warning above the fold, as here.
What to test: Sample widget vs plain explanation. Measure sign-ups and understanding of share lending.
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.
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 trading212.com, 16 Oct 2026
- Tversky & Kahneman (1973), Availability: A heuristic for judging frequency and probability. doi.org/10.1016/0010-0285(73)90033-9
- Captured by Nudgeswipe, 16 Oct 2026 (logged out): trading212.com
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