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
Cooperstown Dreams Park
Cooperstown Experience – The Ultimate Baseball Destination.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 2.9
140 ratings · Below Average
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 Cooperstown Dreams Park: map the core Sports 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
Optimize data fetching and caching mechanisms.
Assumption to check: Inconsistent performance and slow loading times
Validate with people who use this workflow before building.
Hypothesis 2
Introduce social sharing and notifications.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 3
Enhance navigation with more intuitive paths and transitions.
Assumption to check: Poor navigation experience
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
Cooperstown Experience – The Ultimate Baseball Destination. The Cooperstown Dreams Park App is designed to help guests navigate the Dreams Park Experience, and provides information to guests including teams, team contacts, parents & relatives, as well as team guests. Our app provides up-to-the-minute news and notifications about events, weather-related delays, general information, and livestreamed baseball games broadcasted from our facilities. The Greatest Tournament In America promoting a high caliber of play, players twelve years and under, experience the purity of baseball as it was meant to be played! The Village of Cooperstown adds even more magic to the experience of our tournaments. Participants will have the opportunity to visit the National Baseball Hall of Fame, and attend baseball games at Doubleday Field, the legendary home of baseball, where the game began one afternoon in 1839. The Cooperstown Dreams Park App will provide vital information in the days prior to your arrival and support you throughout your time on site. Prepare for your trip, download and share the Cooperstown Dreams Park App with your team and family today!
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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
Supabase
React Navigation
TypeScript
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.
