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
Discover the stories behind 850+ Manhattan landmarks, from world-famous icons to the buildings you pass every day.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
29 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 included14 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 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Discover the stories behind 850+ Manhattan landmarks, from world-famous icons to the buildings you pass every day. Landmarks New York is a pocket guide for curious walkers, architecture lovers and anyone who wants to see more of the city. Explore the map, choose a building and uncover its history, architects and distinctive details. EXPLORE AT YOUR OWN PACE Find landmarks around you or browse a neighborhood before you go. Search by building name, address, architect or architectural style, and filter the map by types such as museums, theaters, libraries, firehouses and carriage houses. LOOK CLOSER Read building histories and see architectural facts at a glance, including construction dates, architects and styles. Preview the streetscape with Apple Look Around where available. GO BACK TO THE SOURCE Open original designation reports from the New York City Landmarks Preservation Commission where available, and discover why these places were recognized for their historical and architectural significance. MAKE YOUR NEXT DISCOVERY Open walking directions in Apple Maps when you find a place you want to visit. Explore on iPhone or enjoy the map and landmark details together on iPad. Optional Ask ChatGPT (Beta) opens ChatGPT with context about the selected landmark. This third-party service may require sign-in and an internet connection. Landmarks is an independent guide focused on Manhattan. Maps, Look Around, online reports and ChatGPT require an internet connection; imagery and report availability vary by location.
Written user reviews are not shown here. Check current App Store reviews >
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.
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.
