name: design-case-studies description: Produces structured teardown documents, principle-to-application comparison matrices, and pattern libraries by applying a five-layer analysis framework to real products. Use when analyzing a product's UI/UX to extract transferable patterns, benchmarking your own design against a category leader, looking up how a specific product (Stripe, Linear, Notion, Apple, Spotify, Netflix, Tinder, Airbnb, etc.) solves a design problem, or building a competitive teardown. metadata: references: - references/brand-experiences.md - references/content-platforms.md - references/design-systems-in-practice.md - references/developer-tools.md - references/e-commerce.md - references/mobile-apps.md - references/saas-dashboards.md - references/emotional-design-growth.md - references/psychological-design-engines.md - references/saas-conversion-psychology.md - references/onboarding-psychology.md - references/tinder-dopamine-design.md - references/outcome-first-ai-design.md - references/peak-end-rule-design.md - references/apple-design-principles.md - references/spotify-design-moat.md - references/netflix-behavioral-design.md - references/product-led-growth-funnel.md
Design Case Studies
Five-Layer Analysis Framework
Apply in order. Each layer feeds the next.
- Visceral (3-second reaction) — name the emotion in one word before analyzing anything.
- Aesthetic — fonts/sizes/hierarchy; palette structure and semantic color use; spacing rhythm; motion duration/trigger.
- Usability — walk the primary flow, mark friction; check Nielsen heuristics; enumerate states (default/hover/focus/loading/empty/error); stress-test edge cases (long text, no data, slow net).
- System — visible token system (spacing, type scale, palette); component DNA; could you add a new screen without inventing patterns?
- Philosophy — map decisions to Gestalt, Rams, Norman's three levels, platform conventions (Material/HIG/custom).
Analysis Template
**Product:** [Name]
**Category:** [SaaS / E-commerce / Content / Mobile / Design System]
**Visceral:** [one word + one sentence]
**Why it works**
| Principle | Concrete application |
|-----------|----------------------|
| ... | ... |
**Key takeaway:** [one sentence]
**Study this closely:** [specific screen, flow, or interaction]
Worked Example — Linear
**Product:** Linear
**Category:** SaaS / Project Management
**Visceral:** Fast. The keyboard-driven feel registers before any visual detail does.
**Why it works**
| Principle | Concrete application |
|-----------|----------------------|
| Rams: As little design as possible | Single-column issue view; no decorative chrome; commands surfaced via Cmd+K, not nav menus |
| Norman: Behavioral level | Every action has a keyboard shortcut shown next to its label; muscle memory compounds with use |
| Nielsen: Recognition over recall | Cmd+K palette shows recent commands + fuzzy search; users never memorize paths |
| Fitts's Law | Frequently used controls (status, assignee, priority) live in a fixed sidebar — large targets, predictable position |
| Hick's Law | Issue creation form shows only title field by default; metadata expands progressively, not all at once |
**Key takeaway:** Speed is a design feature, not a performance one — it's produced by removing decisions, not by removing milliseconds.
**Study this closely:** The Cmd+K palette transitions and the inline issue-creation flow (press C anywhere).
Categories at a Glance
| Category | Reference | Exemplars |
|---|---|---|
| SaaS Dashboards | saas-dashboards.md | Stripe, Linear, Notion, Figma |
| E-commerce | e-commerce.md | Shopify, Apple Store, Glossier, Aesop |
| Content Platforms | content-platforms.md | Medium, Substack, NYT, Readwise |
| Mobile Apps | mobile-apps.md | Apple native, Material apps, gesture UIs |
| Design Systems | design-systems-in-practice.md | Polaris, Carbon, Atlassian, Radix |
| Brand Experiences | brand-experiences.md | Apple.com, Porsche, Aesop, Muji |
| Developer Tools | developer-tools.md | Raycast |
| Emotional Design as Growth | emotional-design-growth.md | Duolingo, Phantom, Revolut |
| Psychological Design Engines | psychological-design-engines.md | Perplexity, Apple Fitness, Waze, Headspace, Discord, Stompers |
| SaaS Conversion Psychology | saas-conversion-psychology.md | Blinkist, Headspace, Moonly, Slopes, Mobbin, Busuu, Uber |
| Onboarding Psychology | onboarding-psychology.md | Breathwork, Stompers, Sudoku, Speechify, Marathon |
| Tinder Dopamine Framework | tinder-dopamine-design.md | Tinder ($0 → $2B) |
| Outcome-First AI Design | outcome-first-ai-design.md | Dia, Intercom Finn |
| Peak-End Rule | peak-end-rule-design.md | Airbnb, Ahead, Uber |
| Apple's Four Principles | apple-design-principles.md | iOS / macOS |
| Spotify's Design Moat | spotify-design-moat.md | Spotify |
| Netflix Behavioral Weapons | netflix-behavioral-design.md | Netflix |
| Product-Led Growth Funnel | product-led-growth-funnel.md | PLG patterns |
Next Steps
- Design Philosophies: theoretical foundations
- Visual Design: apply aesthetic lessons
- Component Library: build components from observed patterns
- Design System Creation: your own system using Polaris/Carbon/Radix lessons