C4 · One thing
One of the 18 tests every grill uses. Clarity is 35% of the score.
The test, as the critic reads it
Does the first viewport promise one thing, not three?
It is scored pass, partial or fail, and it can be marked as not applying. Every finding filed under it quotes the page. The whole checklist is on one page.
How real pages did
Of the 23 public launches judged on it, as of 1 Oct 2026: 18 passed, 3 partly passed, 2 failed. That is a small sample, from the record, not a survey.
Pages that missed it
- Flouiepartly passed · 59 Undercooked · 1 Oct 2026
“Interactive Simulator" and "Interactive Demonstration”
redundant sections split the visitor's focus and look like a layout error
- Grow Your Audience on Xpartly passed · 63 Cooked · 1 Oct 2026
“X/Twitter analytics · scheduling · MCP”
The visitor must process three different tool categories simultaneously, diluting the primary value.
- StackContextfailed · 41 Undercooked · 27 Sept 2026
“a visual UX review, a reproducible bug report, or structured web data”
Promising three distinct utilities dilutes the value proposition and confuses the primary use case.
- eSIMPalpartly passed · 58 Undercooked · 15 Sept 2026
“First viewport”
Promising reuse, top-ups, and family cards simultaneously dilutes the primary unique selling point.
- Fenlofailed · 17 Raw · 8 Sept 2026
"Search across sources, ask questions, and take action with AI agents"
Pages that passed
- plume.koumastudio.compassed · 66 Cooked · 1 Oct 2026
First viewport focuses solely on the resume outcome.
- Nektarpassed · 68 Cooked · 1 Oct 2026
First viewport focuses on one promise: daily exam practice
- AI Visibility Monitorpassed · 92 Well done · 1 Oct 2026
First viewport focuses exclusively on AI visibility monitoring