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
DC American History Tours
The "DC Driving/Walking Tours" app was produced by Capitol Entertainment Services, Inc., a retired DC tour bus company
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
4 ratings · Top 30%
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 DC American History Tours: map the core Entertainment 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 more detailed descriptions and user-generated content.
Assumption to check: Limited tour options and descriptions
Validate with people who use this workflow before building.
Hypothesis 2
Implement reliable background audio playback and controls.
Assumption to check: Audio playback issues in background
Validate with people who use this workflow before building.
Hypothesis 3
Introduce features like user reviews and ratings.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 4
Enhance navigation flow with clearer instructions and interactive maps.
Assumption to check: Navigation can be confusing
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
The "DC Driving/Walking Tours" app was produced by Capitol Entertainment Services, Inc., a retired DC tour bus company. For over 40 tears, Capitol Entertainment Services, Inc. provided high quality bus tours for the millions of visitors to the nation's capital. Giving visitors professional sightseeing tours conducted by licensed professional tour guides over the years has enabled Capitol Entertainment Services, Inc. to produce a GPS tour guide app that will let you tour Washington, DC from the convenience of your car or home. Take a driving or walking tour of Washington, D.C. using the "DC Driving/Walking Tours" app and experience a self- guided tour of the national monuments and memorials and many other historic tourist attractions. The "DC Driving/Walking Tours" app includes the historical overview of Washington, DC and 28 DC tour audios and videos. The app includes the following: 1. Historical overview of Washington D.C. 2. Capitol Hill/Pennsylvania Avenue Driving/Walking Tour 3. National Monuments/Memorials Driving/Walking Tour 4. Walking Tour of the White House Promenade
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-maps
@react-native-community/audio-toolkit
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.
