Wingify × Zwitserleven
Wingify x Zwitserleven, one CTA word change lifts sign-up clicks 14%
+14.41% click-through rate
Vague CTA to clear direction
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Why it works
The story is short and tightly scoped around a single testable hypothesis, which makes the mechanism easy to follow. The 99.9% statistical confidence figure adds credibility to the headline metric. The closing explanation of why the change worked doubles as a generalizable lesson, which gives the piece practical value beyond the specific customer.
Steal this
End with a brief 'so why did this work?' section that turns one customer's result into a transferable principle for the reader.
Click to enlarge ↗ This is editorial commentary and curation. The case study, screenshot, and all metrics are Wingify's published work; we link to the source and lead with our analysis.