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
Enterprise Rent-A-Car
Enterprise Rent-A-Car brand is part of the world’s largest car rental provider
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
772,055 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.
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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/
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 Enterprise Rent-A-Car: 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 a wider range of vehicles and locations.
Assumption to check: Limited vehicle options in some areas
Validate with people who use this workflow before building.
Hypothesis 2
Add a map view with nearby rental locations.
Assumption to check: Difficulties with finding rental locations
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the booking flow with clearer steps and confirmations.
Assumption to check: Confusing booking process
Validate with people who use this workflow before building.
Hypothesis 4
Enhance real-time messaging capabilities for better communication.
Assumption to check: In-app messaging delays
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
Enterprise Rent-A-Car brand is part of the world’s largest car rental provider. With over 9,500 car rental locations around the world, it has never been easier to rent a car while on the go. The Enterprise car rental app is your free travel planner across the US, Canada, Europe, Latin America and more. Our award-winning customer service and variety of vehicle options from economy to luxury car rental will keep your travel worry-free. The Enterprise car rental app allows you to easily find a rental car, view or modify upcoming reservations, modify your rental return date and time, get directions to your rental car branch or call roadside assistance for 24/7 help on the road. Stay signed into your Enterprise Plus account on the app to make reservations faster and earn points you can redeem for free rental days. Make a car rental reservation: • Find car rental locations near you for your upcoming travel • Narrow your search with location and vehicle filters • Book long term car rental for extended travel plans • Save rental details to make future reservations even faster Access all your car rental information in one place: • Easily view the details and information of your rental car and trip • Skip a step when picking up your rental by Checking In for upcoming reservations • Quickly reference pick-up or drop-off times for your car rental • Easily modify your rental return date and time • Get directions back to your rental car location Manage your Enterprise Plus account: • Earn points on every dollar spent • View your reward points balance • Update account details • Redeem your reward points toward free rental days Get help when you need it most: • Call roadside assistance or our customer support for help • Find car rental branch details including phone number, address and directions Do you have a favorite Enterprise rental car location? • Make a location your “favorite” in the app • Quickly access information to reserve a rental car at your most visited location Are you ready for a road trip? • Find the best road trip cars – choose from a wide selection of cars, trucks, SUV’s and vans • Reserve a vehicle at any destination with thousands of rental car locations • Stay safe with our complete clean pledge. Every vehicle will be cleaned and sanitized • Never get stuck on the road with access to 24/7 roadside assistance Enterprise is always there when you need us. Now with our rental car app we are making it even easier to experience all the benefits Enterprise has to offer from your mobile phone. By clicking on "Install", you consent to the Terms of Use and Privacy Policy including access to or storage of performance and usage device & app related data for analytic purposes by Enterprise Rent-A-Car or its third party providers."
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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.
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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.
