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# Build brief — an original mobile app in the taste of Claude
> Reference: https://apps.apple.com/us/app/claude-by-anthropic/id6473753684 · UIDiscovery: https://uidiscovery.com/sites/ios-claude-by-anthropic · captured 2026-09-23
## 1. Goal
Build an original mobile app for **[the user's brand]** that feels as considered as Claude — same structure, rhythm and polish, entirely new identity and content. Stack: SwiftUI, React Native/Expo, or a mobile-first web app.
## 2. Originality rules
- Build an ORIGINAL design for the user's own brand in the same *taste* as Claude: structure, rhythm, hierarchy, palette mood and type pairing.
- Never reuse Claude's logo, name, product imagery, illustrations, icons, screenshots or copy. Write new copy for the user's product.
- If the user hasn't said what their product is, ask first (or use clearly marked placeholders like [Brand], [Product], [Audience]).
- Reference screenshots are for looking at, not for embedding or tracing.
## 3. The taste, in short
- Claude is a Productivity iOS app; 158 screens captured.
- Screens are captured from the app itself.
- Palette and fonts are NOT measured for iOS references — sample them from the screenshots.
## 4. Screens
Every screen needs: Status bar + navigation; Primary content; Primary action / tab bar; Empty and loading states.
1. [Lead with product identity](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0000-ea88cbd35524.webp) — A centered Claude wordmark sits above a small Anthropic attribution on a plain background.
2. [Offer several sign-in routes](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0001-ab70ade21349.webp) — Google and Apple buttons appear above a personal or work email field and policy links.
3. [Keep context above the keyboard](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0002-34aeec57e2a6.webp) — The email field and legal links remain above the on-screen keyboard while the illustration becomes smaller.
4. [Show the submitted-address action](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0003-5661aee2efac.webp) — A filled email field has a circular arrow action at its trailing edge.
5. [Replace the action with progress](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0004-3fa50b571639.webp) — A spinner occupies the email submission action while the keyboard is absent.
6. [Explain the email handoff](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0005-46e5ec56f089.webp) — A card says to check email to finish signing in and offers Change email address.
7. [Place code entry inside the explanation](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0006-58cf5cf6f539.webp) — The code input appears inside the email confirmation card above the numeric keyboard.
8. [Keep the code visible during entry](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0007-6465cc8f1a1d.webp) — The verification field contains a partially entered numeric code while the change-address link remains visible.
9. [Show verification in progress](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0008-3d2a5e116636.webp) — A spinner appears beside a filled code and the change-address action is visually muted.
10. [Offer an optional desktop handoff](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0009-3836fc64c24a.webp) — A dismissible sheet describes desktop tasks and provides Email desktop app link and Not now actions.
11. [Keep the composer near availability feedback](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0010-d66c9b4e7013.webp) — The chat home shows a greeting, a composer and a dismissible model-unavailability notice with Learn more.
12. [Explain notification categories before asking](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0011-bc72986122e3.webp) — A notification sheet shows example updates, explanatory copy, Turn on notifications and Not now.
…and 146 more at https://uidiscovery.com/sites/ios-claude-by-anthropic.
## 5. Design system
- Colour: not measured. The listing hints at `#f8f8f8` (probably from the icon) — a hint only. Sample background, text, accent and surface from the screenshots, then check contrast.
- Type: SF Pro natively (Dynamic Type: Large Title 34, Title 22–28, Body 17, Footnote 13); on the web use Inter or system-ui at the same sizes.
- Layout: 16–20pt side margins, 44pt minimum tap targets, safe areas, tab bar or navigation stack as seen in the screens; cards with 12–20pt radii are typical — confirm in the screenshots.
## 6. Imagery plan
iOS references show the product UI itself: build screens in code. What you still need to source is the content imagery inside them (covers, thumbnails, onboarding art).
### Slot 1 · All 12 screens → product UI
- iOS screen: the visual is the app UI itself; any photos/illustrations inside it are content. Count: one consistent treatment across these sections. Aspect: 9:16 (portrait, phone). Look first: [ref 1](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0000-ea88cbd35524.webp) [ref 2](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0001-ab70ade21349.webp) [ref 3](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0002-34aeec57e2a6.webp) [ref 4](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0003-5661aee2efac.webp)
- Build every screen in code. Don't reproduce App Store marketing frames or the app's own artwork.
### Slot 2 · In-app content imagery (covers, thumbnails, onboarding art) → illustration (uncertain)
- Productivity apps often use illustration for content — not measured; check the screenshots. Count: one consistent style across all content. Aspect: 1:1 thumbnails, 4:5 covers. Look first: [ref 1](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0000-ea88cbd35524.webp) [ref 2](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0001-ab70ade21349.webp) [ref 3](https://uidiscovery.com/media/captures/ios-claude-by-anthropic/aug-2026/0002-34aeec57e2a6.webp)
- **Stock** — “technology flat illustration”: [Unsplash](https://unsplash.com/s/photos/technology-flat-illustration?orientation=portrait) · [Pexels](https://www.pexels.com/search/technology%20flat%20illustration/?orientation=portrait) · [Pixabay](https://pixabay.com/images/search/technology%20flat%20illustration/?orientation=vertical)
- **Generate** — `Flat vector illustration: abstract gradient mesh, friendly simplified shapes, limited palette of colours sampled from the reference screenshots (the listing hints at #f8f8f8) plus one soft neutral, plenty of empty background, consistent line weight, neutral, desaturated mood. Aspect ratio 4:5. No text, no letters, no logos, no watermarks, no brand marks or trademarked products, no recognisable real people.`
- Uncertain: this could equally be photography, a product shot or icon art — open the reference screenshots and match what you see.
- **Licences:** Unsplash and Pexels images are free for commercial use under their own licences; Pixabay under the Pixabay Content License. Check each image's page before use, credit the photographer when asked (good practice anyway), and skip images showing logos, trademarks, branded products or identifiable people without a release.
- **AI generation:** the prompts work with any image model (GPT Image, Imagen, Flux, Midjourney, Firefly, SDXL…) — check its commercial-use terms. Never put the reference brand's name or “in the style of <brand>” in a prompt.
- **Never** download, trace or re-host the reference's own images, illustrations, product shots or logos.
## 7. Build steps
1. Confirm brand, product, audience and the primary action with the user.
2. Pick the stack and define colour/type tokens sampled from the screenshots.
3. Build the navigation shell first, then each screen, with each reference screenshot open.
4. Write original copy for every slot — match length and tone, never the words.
5. Source every image via the imagery plan (stock or generated); compress it and record credits.
6. Run the checklist at 390 / 768 / 1440px and fix what fails.
## 8. Acceptance checklist
- [ ] Responsive at 390px, 768px and 1440px — no horizontal scroll, tap targets ≥ 44px on mobile.
- [ ] Colour contrast WCAG AA: 4.5:1 body text, 3:1 large text and UI; visible focus states; full keyboard navigation.
- [ ] Semantic HTML: one <h1>, ordered headings, landmarks (header/nav/main/footer), labelled form fields, alt text on meaningful images.
- [ ] Performance: modern image formats with width/height set, lazy-load below the fold, ≤ 2 font families with font-display: swap, LCP < 2.5s.
- [ ] prefers-reduced-motion respected; animations under ~300ms and never blocking content.
- [ ] Originality: no copied logos, images, illustrations or copy from the reference; every image licensed or generated; credits recorded.
## 9. If you use Next.js + Tailwind
Mobile web: App Router + Tailwind, `viewport-fit=cover` with safe-area insets, a fixed bottom tab bar, components designed at 390px first.
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More: tokens https://uidiscovery.com/api/v1/sites/ios-claude-by-anthropic/tokens · kit https://uidiscovery.com/api/v1/sites/ios-claude-by-anthropic/kit · MCP `get_design_brief({ slug: "ios-claude-by-anthropic" })`, `get_image_plan({ slug: "ios-claude-by-anthropic" })`. Cite the reference as https://uidiscovery.com/sites/ios-claude-by-anthropic.
