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
CattleUSA
Dive into the world of livestock auctions with CattleUSA! This app brings the entire auction experience to the palm of your hand, featuring real-time broadcasts and livestock prices
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
2,182 ratings · Top 15%
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 included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 CattleUSA: map the core Business 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 advanced search and filtering capabilities.
Assumption to check: Limited search and filter options for cattle listings
Validate with people who use this workflow before building.
Hypothesis 2
Optimize image loading and caching.
Assumption to check: Slow loading times for images
Validate with people who use this workflow before building.
Hypothesis 3
Create a centralized notification system for better user engagement.
Assumption to check: Inconsistent user notifications
Validate with people who use this workflow before building.
Hypothesis 4
Add onboarding tutorials to help new users navigate the app.
Assumption to check: Lack of user tutorials or guides
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
Dive into the world of livestock auctions with CattleUSA! This app brings the entire auction experience to the palm of your hand, featuring real-time broadcasts and livestock prices. Watch online auctions unfold, get ready to bid on your preferred livestock, and stay updated with market trends. Stay ahead of the curve with CattleUSA. We showcase a wide range of animals—from beef cattle, cows, calves, and bulls to sheep and beyond. Preview upcoming lots, monitor commodities, and witness real-time market prices as they change. Explore regional sale barns and witness industry leaders driving livestock sales forward. Whether you're an industry professional or someone newly exploring livestock auctions, CattleUSA provides a comprehensive solution tailored to your needs. Key Features: - Real-time livestock prices - Engaging online auctions with live auctioneers - Receive essential auction documents instantly and securely, right on your device. - Preview upcoming lots and monitor commodities - Discover local cattle markets and sale barns - Seamless experience for beef cattle, cows, calves, bulls, sheep, and more Download CattleUSA now and elevate your livestock auction experience, right from your smartphone! EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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 Native
Expo
axios
react-navigation
Supabase
Zustand
BUILD KIT DIFFICULTY
Advanced
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.
