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
Kauai Offline Island Guide
Tired of those clunky paper maps and ad-filled brochures from airports and rental car counters? We’ve got you covered!
$7.99 · In-app purchases
PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
31 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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 Kauai Offline Island 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 more downloadable content and features for offline users.
Assumption to check: Limited offline content may frustrate users
Validate with people who use this workflow before building.
Hypothesis 2
Implement a robust search feature with filtering options.
Assumption to check: Difficulty in finding specific points of interest
Validate with people who use this workflow before building.
Hypothesis 3
Add user-generated content options like reviews and ratings.
Assumption to check: Lack of user engagement features
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a freemium model with in-app purchases for premium features.
Assumption to check: High price point for a single purchase
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
Tired of those clunky paper maps and ad-filled brochures from airports and rental car counters? We’ve got you covered! Introducing Kauai by I Heart Travel! Explore over 110 of our favorite photo spots across Kauai, Hawaii, complete with offline maps, directions, photos, and detailed descriptions, all in the palm of your hand. Best of all, our app works without a cell signal! Simply download our offline guide, and like magic, the app will work even when you’re off the grid. You’ll be able to check in and save attractions, add photos, and find the exact locations of Kauai’s coolest spots including Queen’s Bath, Glass Beach, Maniniholo Dry Cave, and Wailua Falls, all without an internet connection! Bookable Experiences Alongside our 110+ photo spots, you can now choose from over 50 handpicked adventures right in the app. Learn to surf in Poipu, kayak and hike to the world-famous Secret Falls, soar doors-off over Waimea Canyon, snorkel the Na Pali Coast from a super raft, and much more! Leave No Trace When visiting any attraction, whether in our app or not, please be respectful and leave it just as you found it. Take only photos and leave only footprints. To learn more, visit LNT.org. Happy exploring, The I Heart Travel Team
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
react-navigation
@react-native-maps
react-native-async-storage
axios
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.
