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
Landmarks New York
Landmarks puts the hidden history behind over 850 New York City buildings at your fingertips
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
28 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included14 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 Landmarks New York: 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
Provide rich multimedia content (videos, 360 views) to enhance user engagement.
Assumption to check: Limited information on landmarks compared to dedicated guides
Validate with people who use this workflow before building.
Hypothesis 2
Clearly highlight benefits of subscriptions and provide a free trial.
Assumption to check: In-app purchases can be confusing or hidden
Validate with people who use this workflow before building.
Hypothesis 3
Implement an intuitive map feature with filtered searches and guided tours.
Assumption to check: Navigation can be cumbersome with many destinations
Validate with people who use this workflow before building.
Hypothesis 4
Encourage users to leave reviews through gamification and rewards.
Assumption to check: User-generated reviews may be sparse
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
Landmarks puts the hidden history behind over 850 New York City buildings at your fingertips. Download and use on iPhone and iPad, and now also available on Mac. Locate buildings nearby and across the City. Explore the Google Street View and a summary of the building's history from the official NYC Landmarks Preservation Commission report. Discover new buildings of any style by filtering for building types like firehouses, libraries, theaters, religious structures and more. Since 1965, the NYC Landmarks Preservation Commission has been designating the historical and architectural best of New York City's buildings. Landmarks unlocks the history buried in all of these official Manhattan architectural designation reports, including buildings you know -- like the Brooklyn Bridge, Empire State Building, Flatiron Building, and the Statue of Liberty -- plus hundreds more dating as far back as the 1700's. Download it now to start exploring today!
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
react-navigation
@react-native-async-storage/async-storage
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.
