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
Apartment List: Apt rentals
Search fast and rent faster with Apartment List – the most personalized way to apartment hunt
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
502,446 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 included17 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 Apartment List: Apt rentals: map the core Lifestyle 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
Enhance search filters and implement predictive search.
Assumption to check: Users find the search functionality limited and not intuitive.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a notification system for saved apartments.
Assumption to check: Users often miss seeing saved apartments after navigating away.
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the application process with guided steps.
Assumption to check: The application process can be confusing and lengthy.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize data fetching and loading indicators for better user experience.
Assumption to check: Users report issues with data loading times.
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
Search fast and rent faster with Apartment List – the most personalized way to apartment hunt. Tell us what you want in your next home, and discover premium apartments for rent in any city, curated just for you. Our Rental Matchmaker instantly filters through 1000s of rental apartments to guide you to the perfect one, so you love where you rent next. Apartment List Key Features: Rental Matchmaker Quiz Our 5-minute quiz saves you hours of searching for the perfect apartment. Answer a few questions about what you’re looking for – apartment size, amenities, location, budget, and more – and we’ll instantly recommend premium rental apartments that match your preferences. Adjust your preferences at any time, and we’ll refresh your matches. Curated Apartment Matches We sort your apartment matches into two categories: Perfect Matches and Flex Matches. Perfect Matches: Listings that have everything on your wishlist. Flex Matches: These listings may not match all your preferences, but you might find a few hidden gems. Our Flex Matches are based on local insights and similar searches from renters like you. See an apartment for rent that you love? Swipe right and we’ll automatically add it to your shortlist. Hit “Maybe” on the listings you’re not sure about–we’ll save them so you can check them out later. Additional Features: Amenity Focused Filters Personalize your search even further with filters for everything: amenities, move-in dates, commute times, rent specials, lease lengths, and more! Map Searches Discover Perfect Matches and Smart Matches in neighborhoods you’ll love to call home. Our in-map filters help you find rental apartments that fit your wishlist, budget, and location preferences. Real-Time Alerts Get updates on unit availability, price changes, or new rent specials on rental apartments saved to your shortlist. 24/7 Availability and Tour Booking Get in touch with properties anytime, anywhere via phone, text, or email. Book an in-person or virtual tour from the app whenever you’re ready to check out your favorite listings. Our premium apartment listings feature high-quality photos, virtual tours, and real-time updates on pricing, unit availability, and rent specials. We don’t skip out on the fine print – like pet policies and move-in fees – so you know exactly what to expect before you rent. Download Apartment List and find your perfect apartment match today. We’re always making improvements to our app to make your apartment search even better. Have questions or feedback for us? Email us at [email protected]. We’d love to hear from you!
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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
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.
