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
Père Lachaise Cemetery : Interactive Map
This application will guide you through the Père-Lachaise Cemetery
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
3 ratings · Below Average
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 included15 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 Père Lachaise Cemetery : Interactive Map: map the core Navigation 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 advanced search filters and categories.
Assumption to check: Limited search functionality leading to poor user experience
Validate with people who use this workflow before building.
Hypothesis 2
Include offline maps for better usability.
Assumption to check: Lack of offline functionality
Validate with people who use this workflow before building.
Hypothesis 3
Design a more intuitive interface with clear navigation paths.
Assumption to check: User interface not optimized for quick navigation
Validate with people who use this workflow before building.
Hypothesis 4
Provide clearer information and benefits of subscription options.
Assumption to check: In-app purchase model not clearly communicated
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
This application will guide you through the Père-Lachaise Cemetery. It will help you to find your way, find the tomb you're looking for, or just enjoy walking in this fantastic part of Paris. -Instantly locate the nearest celebrity's tomb. -Type a name in the search bar to locate the tomb you're looking for. -Store your position so that you can return to it later. -Find the nearest metro or velib station. -Get your bearings and know in which direction you are heading. -Walk around the cemetery, there are nice places to visit outside. This is an offline application; an internet connection is not necessary, nor is a fixed data package. You will not be charged any roaming fees. This application completely respects your privacy: it does not collect or transmit any informations about you. The database contains over 2000 stored locations, and about 200 celebrities' tombs; just type a name into the search box and there is a very high chance that the application will find it for you. Zoom in and out in order to better visualise your location in a neighbourhood or in broader surroundings. This version does not require an internet connection or Wifi. You will not be charged any roaming fees.";
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
Zustand
react-navigation
axios
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.
