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
Villages GPS
ABOUT OUR APP:
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
7,825 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/
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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 Villages GPS: map the core Navigation 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 a community-driven feedback system for reporting errors.
Assumption to check: Users report inaccuracies in map data
Validate with people who use this workflow before building.
Hypothesis 2
Provide downloadable offline maps.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 3
Simplify UI and improve the organization of features.
Assumption to check: Some users find the interface cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Clarify subscription benefits and streamline options.
Assumption to check: In-app purchases can be confusing
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
ABOUT OUR APP: The Ultimate GPS Guide for Golf Carts and Cars in The Villages, Florida! With over 90,000 downloads, Villages GPS is the most powerful and trusted navigation tool for residents and visitors of Florida’s Friendliest Hometown. Our app is designed specifically for the unique golf cart trails and roundabouts of The Villages, ensuring you never get lost again. SUBSCRIPTION INFORMATION: Villages GPS is free to download. To access core functionality—including real-time navigation and exclusive community features—an active yearly subscription is required. Please see the "In-App Purchases" section for available plans and current pricing. EXCLUSIVE FEATURES: Voice-Guided Navigation: Get turn-by-turn directions by voice, optimized for golf cart travel. Superior Search: Easily find locations by street address, name, or via our interactive map view. Neighborhood Listings: A complete directory of Neighborhood Villages at your fingertips. Point-to-Point Mapping: A resourceful tool to plan your trip before you even leave the driveway. Dining & Shopping: Easily locate restaurants and shopping centers throughout the community. Golf Course Conditions: Stay updated with current reports on course status from fellow Villagers. Comprehensive Activity Lists: The most detailed list of Daily Activities and Clubs available anywhere. Get turn-by-turn directions, find points of interest, and stay on track – *all for just $12.99 per year! A yearly subscription is required to unlock and use all features of the app.* Terms of Use (EULA) link https://villagesgps.wixsite.com/villages-gps-privacy/eula
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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 Navigation
React Native Maps
Axios
@react-native-async-storage/async-storage
Expo
Shadcn/UI
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.
