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
CHP Incidents
Have you ever wondered not only where traffic incidents are on the freeways, but also what's happening with them -- for example, what time the ambulance got there, if the car that broke down has a tow truck on the way...
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
4 ratings · Top 30%
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 included15 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 CHP Incidents: 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
Integrate real-time data from multiple sources for more accuracy.
Assumption to check: Limited data sources for incidents may lead to outdated information.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance UI with richer visuals and animations.
Assumption to check: User interface may be too simplistic, lacking engagement.
Validate with people who use this workflow before building.
Hypothesis 3
Implement user-controlled notification settings.
Assumption to check: Notifications can be overwhelming if too frequent.
Validate with people who use this workflow before building.
Hypothesis 4
Add a feedback or report system for users to communicate.
Assumption to check: Lack of community features for user interactions.
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
Have you ever wondered not only where traffic incidents are on the freeways, but also what's happening with them -- for example, what time the ambulance got there, if the car that broke down has a tow truck on the way, and so on? Now there's an app for that: The California Highway Patrol (CHP) meticulously logs every incident that is reported on freeways in California, and even some that aren't on freeways (maybe close to a freeway, but not necessarily on one). Anyone can retrieve that information. This app presents it in a much more readable fashion than is available from the CHP. Major Features: • View the incidents on a map • Glossary, so you can decipher what the CHP shorthand actually means. • A "Mark" button that lets you mark the locations of incidents and traffic hazards so you can more easily report them to the authorities later. FOR CALIFORNIA ONLY.
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
React Navigation
Axios
Zustand
React Native Maps
BUILD KIT DIFFICULTY
Intermediate
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.
