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
USA National Parks Audio Guide
Explore America’s National Parks with the Best Self-Guided Audio Driving Tours.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
7 ratings · Top 15%
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 included17 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for USA National Parks Audio 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
Provide downloadable audio for offline listening.
Assumption to check: Limited offline access to audio guides
Validate with people who use this workflow before building.
Hypothesis 2
Implement a clearer onboarding process and intuitive navigation.
Assumption to check: Navigation can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Add clear descriptions and benefits for in-app purchases.
Assumption to check: In-app purchase information is unclear
Validate with people who use this workflow before building.
Hypothesis 4
Introduce user reviews and ratings for parks.
Assumption to check: Lack of community features
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
Explore America’s National Parks with the Best Self-Guided Audio Driving Tours. Unlock over 30+ National Parks with our GPS-enabled self-guided driving tour bundle. Whether you're visiting Yellowstone, the Grand Canyon, or the Rocky Mountains, our app makes your road trip easy, informative, and flexible. Perfect for road trips, solo travelers, or family vacations! Why Choose Us? • GPS-Activated Audio: Narration plays automatically based on your location. • Works 100% Offline: No WiFi or cell service required—download the tour and go. • One-Time Purchase: Get lifetime access with no subscriptions or hidden fees. • Expert Narration: Enjoy fascinating stories, local insights, and history along the way. Top National Parks Included: • Western USA: Grand Canyon, Yellowstone, Grand Teton, Rocky Mountain, Yosemite, and more. • Eastern USA: Shenandoah, Acadia, and more. • Southwestern USA: Joshua Tree, Monument Valley, and more. Plus bonus tours like Horseshoe Bend, Salt Lake City, and many more destinations across the USA! Key Features: • Freedom & Flexibility: Explore at your own pace with no set schedules or groups. • Automatic GPS Narration: Audio stories play as you drive by points of interest. • Offline Mode: Use in areas without internet or cell service. • Lifetime Access: Buy once, use forever—no recurring charges. • Educational & Family-Friendly: Great for road trips with kids, offering fun facts, history, and more. Perfect for Road Trips: • Enjoy total flexibility—pause, skip, or replay stops as you wish. • Use the interactive map for seamless navigation. • Ideal for solo adventurers and families looking to make their trip more engaging. How It Works: Download the tour in advance for offline use. Start at the designated starting point and let the app guide you through each stop. Audio plays automatically using GPS as you approach key spots—no manual input needed. Bonus: Many more scenic drives, cities, and parks across the USA! What You’ll Need: • A fully charged phone (consider a portable charger). • GPS and location services enabled for smooth tracking. Download Now and explore America’s national parks and hidden gems like never before!
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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/native
expo-av
@supabase/supabase-js
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.
