What problem does it solve? Mobile app teams often produce inconsistent copy, colors, and visuals across screens, notifications, and App Store listings, which weakens user trust and brand recognition. This Skill provides a single reference for voice, tone, writing, and visual standards so every contributor produces aligned output. ## Core Features & Use Cases - Brand Voice and Tone Framework: Define voice adjectives with concrete examples and adjust tone for success messages, errors, onboarding, empty states, and push notifications. - Writing Standards: Apply frameworks for App Store descriptions, onboarding text, and error messages using the formula of what failed, why, and what the user can do next. - Visual Identity Rules: Standardize color tokens, WCAG AA contrast ratios, typography roles, icon style, animation personality, and App Store assets like icons, screenshots, and preview videos. - Use Case: When writing a new App Store description or reviewing a new screen, check the consistency checklist to verify voice alignment, color token usage, and a clear single call to action. ## Quick Start Review the attached onboarding screen copy and error messages against the brand voice, tone, and error message frameworks.