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
Tren Maya: Maya Train Guide
Discover the charm of the Yucatan Peninsula through the first Mayan Train mobile application
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 Tren Maya: Maya Train Guide: 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
Implement a robust review system with user verification.
Assumption to check: Lack of user reviews and ratings can make it hard to trust the app.
Validate with people who use this workflow before building.
Hypothesis 2
Provide detailed guides, photos, and user-generated content for each destination.
Assumption to check: Limited information on destinations can lead to user dissatisfaction.
Validate with people who use this workflow before building.
Hypothesis 3
Design a clearer navigation structure with intuitive flow between screens.
Assumption to check: Poor navigation experience can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce transparent pricing models with value propositions for premium features.
Assumption to check: In-app purchases can deter users if not clearly explained.
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
Discover the charm of the Yucatan Peninsula through the first Mayan Train mobile application. Immerse yourself in a unique experience as you explore the train route, the ancient towns where the train stops, and its sections already in operation. Key features: + Tren Maya Route: Explore the fascinating journey of the Mayan Train across the picturesque peninsula. Discover the cultural and natural richness available near each station. + Emblematic Stations: Get to know the key stations along the route, each with its own history and nearby attractions. Plan your trip and discover local gems at each stop. + Interactive Map: Easily navigate through the interactive map to obtain detailed information about each operational segment. Immersive Experience: Immerse yourself in the beauty and diversity of the Yucatan Peninsula through detailed images and descriptions. Prepare for a unique adventure that combines history, culture, and modernity. Download this app and be part of this exciting journey that connects the past with the future!
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
axios
react-navigation
zustand
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.
