Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
National Gallery of Art HD
Take a walk through the virtual halls of the museum of the National Gallery of Art Washington (USA), where you will enjoy the masterpieces of world art.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
173 ratings · Top 5%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for National Gallery of Art HD: map the core Lifestyle workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Implement pinch-to-zoom functionality on artwork images.
Assumption to check: Limited interactivity with artworks (e.g., no zoom feature)
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to create and share their own exhibitions.
Assumption to check: Lack of user-generated content or social features
Validate with people who use this workflow before building.
Hypothesis 3
Implement caching for offline viewing of artworks.
Assumption to check: No offline access to artworks
Validate with people who use this workflow before building.
Hypothesis 4
Provide customizable profiles and favorites management.
Assumption to check: User interface lacks personalization options
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Take a walk through the virtual halls of the museum of the National Gallery of Art Washington (USA), where you will enjoy the masterpieces of world art. App includes the best-known paintings of the museum, such as: - "Portrait of Ginevra de' Benci" by Leonardo da Vinci. - "Venus with a Mirror" by Titian - "Self-Portrait" by Rembrandt - "Laocoon" by El Greco - "Self-Portrait" by Van Gogh Here you will find the works of Goya, Rubens, Raphael, Botticelli and many other eminent masters of painting Get masterpiece of world art for yourself - in the app is available feature for download and get email HD version of any picture. Our app guides you through treasures of the museum, where you can enjoy the masterpieces of world art and become more erudite. KEY FEATURES - 920 paintings of more than 400 masters of painting - Separation of paintings by genres and authors - Access to the HD version of works, paintings saving in the Photo Album - Email paintings to your friends - Public paintings on Facebook - Convenient search for paintings - Adding paintings to My favorites - Custom works filter - Slideshow Mode - Download paintings for the offline viewing - Zoom of Paintings Enjoy your viewing! Follow us on Twitter for app sales & updates: http://twitter.com/evo_apps
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Navigation
Axios
Expo Image
React Native Gesture Handler
Zustand
Shadcn/UI
BUILD KIT DIFFICULTY
Intermediate
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
