What problem does it solve? Reviews of mobile-friendliness often produce vague feedback like "make the buttons bigger" with no thresholds, no severity, and no systematic coverage. This Skill turns a mobile review into a structured audit that checks seven concrete areas — viewport reflow, orientation, touch targets, thumb reach, input ergonomics, gesture safety, and readability — and rates every finding by whether it blocks the task on the actual device. ## Core Features & Use Cases - Seven-area systematic sweep: Checks viewport adaptation and reflow, orientation resilience, touch-target size and spacing (44pt/48dp, ≥8dp spacing), thumb reachability, mobile input ergonomics, gesture safety, and mobile readability (≥16px body, 30–40 character lines). - Severity-rated findings: Classifies issues as Critical, Major, or Minor based on task impact on the device, each with the violated principle, the concrete threshold, and a specific fix. - Validation handoff: Designed to run as a post-generation validation step for mobile or responsive UI produced by generative design skills, while deferring WCAG/contrast, aesthetics, and flow concerns to sibling audits. - Use Case: After generating a responsive checkout screen, run this audit to catch a 28px delete button adjacent to Save, a phone field opening a QWERTY keyboard, and a CTA stranded in the top corner — each rated and paired with a fix. ## Quick Start Ask the assistant to run a mobile responsiveness audit on your screen or component, describing the target device class and primary task.
