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
Cars.com - New & Used Cars
Shopping for a new or used car or truck? Download the free Cars.com app and start exploring every possible car for every possible you
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
617,335 ratings · Top 5%
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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.
JavaScript is required to complete mailbox verification.
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 Cars.com - New & Used Cars: map the core Shopping workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 better filters and sorting options.
Assumption to check: Search results can be overwhelming and lack organization.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance data validation and user submissions.
Assumption to check: Inconsistent car detail information.
Validate with people who use this workflow before building.
Hypothesis 3
Add more interactive messaging capabilities between users.
Assumption to check: Limited messaging features.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize image size and loading strategy.
Assumption to check: Slow loading times for images.
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
Shopping for a new or used car or truck? Download the free Cars.com app and start exploring every possible car for every possible you. With millions of vehicle listings, over 10 million dealership reviews, and the technology to get personalized offers to sell your current car and finance your next one — the next step in your journey starts here. EXPLORE MILLIONS OF CAR LISTINGS Search millions of new, used, and certified pre-owned cars for sale. Shop the possibilities of SUVs, pickup trucks, minivans, sedans, EVs, and more. Get tailored recommendations in your area based on your search preferences. FIND THE ONE WITH ADVANCED SEARCH Narrow your search by price, mileage, year, exterior and interior color, features, fuel type, body style, and more to find the exact right vehicle for you. CHOOSE A TOP-RATED DEALERSHIP Confidently choose where to buy based on over 10 million dealership reviews. View ratings, read reviews from real shoppers, and quickly get directions to a 5-star dealership. KNOW A GREAT DEAL WHEN YOU SEE ONE Know when you’re viewing a “Great Deal”, “Good Deal”, or “Fair Price” based on how similar vehicles are priced in your local market. MOVE FAST ON HOT CARS Look out for our "Hot Car" badges to identify popular vehicles you should act fast on, so the car you’ve been dreaming about doesn't get sold before you have time to take it on a test drive. SAVE YOUR FAVORITES Save your favorite cars and searches. Set up price drop notifications to get alerts any time one of your favorite cars drops in price. SHOP WITH EXPERTS Get the latest automotive news and expert advice from our Editorial team, watch unbiased and comprehensive video reviews of new models, and read personal vehicle reviews from millions of drivers like you. PERSONALIZE YOUR MONTHLY PAYMENT Use the car loan payment calculator to estimate a budget based on your unique needs., Once you find the right vehicle for you, get personalized payment offers from select dealers. TRACK YOUR CAR’S VALUE Add your car to Your Garage to track (and forecast) its market value to know when the time is right to sell. GET AN INSTANT OFFER TO SELL YOUR CAR Get an instant cash offer to sell your current vehicle to a local dealership. All it takes is entering a few details about your car. LIST YOUR CAR ON CARS.COM Create a free listing to sell your current vehicle on Cars.com. List to our millions of shoppers, connect with potential buyers and transact completely online.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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 Query
Zustand
BUILD KIT DIFFICULTY
Expert
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.
