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
NDC Lookup
NDC Lookup gives you fast, offline access to the full FDA National Drug Code directory
$4.99
PRICE
$4.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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 NDC Lookup: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
NDC Lookup gives you fast, offline access to the full FDA National Drug Code directory. Search by drug name, NDC code, ingredient, or labeler. Filter by dosage form, route, DEA schedule, and more. Scan barcodes on drug packaging for instant lookup. Convert between 10-digit and 11-digit NDC formats. Export search results as CSV or JSON. The complete database is bundled with the app. No internet connection, no account, no subscription. Just open and search. Features: - Full-text search across 140,000+ products and 280,000+ packages - Barcode scanning for instant drug lookup - NDC format converter (10-digit and 11-digit) - Filter by dosage form, route, DEA schedule, marketing category - Detailed product info with packages, ingredients, and pharmacological classes - CSV and JSON export via Share Sheet - Recent search history - Runs on iPhone, iPad, and Mac
Written user reviews are not shown here. Check current App Store reviews >
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
Provide detailed drug information and user reviews.
Assumption to check: Limited information about drugs can lead to user dissatisfaction
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search algorithms and filters.
Assumption to check: Search functionality may not return accurate results
Validate with people who use this workflow before building.
Hypothesis 3
Introduce user accounts for personalized experiences and favorites.
Assumption to check: No user account features for saving preferences
Validate with people who use this workflow before building.
Hypothesis 4
Integrate a dynamic database for up-to-date drug information.
Assumption to check: Static content could become outdated
Validate with people who use this workflow before building.
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 Native
Expo
Axios
React Navigation
Zustand
React Native Reanimated
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
