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
CHPMap Pro
Know what's happening on California highways — right now.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
29 ratings · Top 50%
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 included16 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 CHPMap Pro: map the core Travel 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 offline caching for maps and points of interest.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Provide clearer subscription options and trial messaging.
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
Hypothesis 3
Adopt a more contemporary design with better usability.
Assumption to check: User interface lacks modern design elements
Validate with people who use this workflow before building.
Hypothesis 4
Integrate user-generated content for real-time updates on points of interest.
Assumption to check: Inaccurate point of interest data
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
Know what's happening on California highways — right now. CHPMap Pro shows real-time California Highway Patrol (CHP) incidents on a live, interactive map, so you can see collisions, hazards, road work, and closures before they slow you down. Tap any incident for the full CAD log — type, location, time, and unit updates — in clean, readable detail. Why drivers rely on CHPMap Pro: - Real-time CHP incidents, statewide - Tap any incident for full details and live updates - Fast, map-first design built for the road - Save favorites and share incidents with a tap Add the layers you want: - Traffic Cameras — live Caltrans highway camera feeds - Weather Alerts — NWS zones, color-coded by severity - EV Chargers — public charging stations - Rest Areas — Caltrans roadside stops Great for daily commuters, long-distance travelers, fleet and field teams, and anyone who wants a clearer view of the road. CHPMap Pro is not affiliated with the California Highway Patrol. Incident and map information may be delayed or incomplete — always follow official guidance and road signs. Premium layers (Traffic Cameras, Weather Alerts, EV Chargers, Rest Areas) are optional auto-renewing yearly subscriptions, each with a 7-day free trial. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless canceled at least 24 hours before the end of the current period; manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://itsnode.com/disclosure/chpmap/terms.html Privacy Policy: https://itsnode.com/disclosure/chpmap/privacy.html
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
Supabase
Zustand
react-native-maps
react-navigation
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.
