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
Shaka Guide Maui Audio Tours
Meet your Maui tour guide
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
24,163 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.
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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 included18 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 Shaka Guide Maui Audio Tours: 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 caching for audio files and tour data.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Create a more intuitive navigation flow with breadcrumbs.
Assumption to check: Difficult navigation between tours
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate user reviews for audio quality feedback.
Assumption to check: Inconsistent audio quality
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to create custom tour playlists.
Assumption to check: Lack of customization options for tours
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
Meet your Maui tour guide. Discover GPS audio tours that turn your drive into a guided adventure. Imagine driving the Road to Hana or heading up Haleakala when your phone starts telling you exactly what you’re looking at — a hidden waterfall, a scenic overlook, a story you would’ve missed — that’s how Shaka Guide works. Explore Maui with Shaka Guide, a top-rated GPS audio tour app with 4.9 stars from 240,000+ travellers and made in Hawaii. Our GPS audio tours play automatically as you drive, guiding you with stories, directions, and local insights, completely offline. WHY SHAKA GUIDE MAUI? • GPS audio tour that plays based on your location • Works 100% offline — no cell service needed • Built-in maps with preplanned routes and navigation • Explore at your own pace — no schedules or groups • Stories, Hawaiian music, and local travel tips • Visit waterfalls, beaches, hikes, and more It’s like having a tour guide in your car. No crowds or time limits. HOW IT WORKS Download a tour, start driving, and go. • Audio plays automatically along your route • Get directions, stories, and recommendations in real time • Stop where you want, skip what you don’t, or explore over multiple days No rushing. No rigid plans. Just a better way to explore Maui. MAUI TOURS ROAD TO HANA (MOST POPULAR) Classic, Loop & Reverse Routes 10+ hours • 30+ stops • Waterfalls and swimming holes • Waianapanapa black sand beach • Scenic hikes and viewpoints • Hawaiian legends and local stories Popular stops include Twin Falls, Waianapanapa State Park, Hana Town, Pipiwai Trail, and the Seven Sacred Pools. HALEAKALA NATIONAL PARK Sunrise • Sunset and Stargazing Drive to the summit with guided stops, viewpoints, and cultural stories along the way. WEST MAUI COASTLINE 6+ hours • 17 stops Explore Lahaina, Kaanapali, Kapalua, and Maui’s rugged coastline — including the Nakalele Blowhole and Iao Valley. SAVE WITH THE MAUI BUNDLE Get all 6 Maui tours for over 50% off. TRUSTED BY TRAVELERS • 24,000+ reviews • 4.9-star rating What travelers say: “Best Road to Hana tour app — we would’ve missed so much without it.” “It felt like our tour guide was in the car with us.” “Couldn’t have navigated the Road to Hana without it.” PLAN LESS. EXPERIENCE MORE. Skip the research. Travel smarter. Discover more along the way. Download Shaka Guide and explore Maui at your own pace. IMPORTANT NOTES • Download tours on Wi-Fi before your trip • Continued GPS use may drain battery — bring a charger • Wi-Fi-only iPads are not supported
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
Redux
React Navigation
Axios
Firebase
BUILD KIT DIFFICULTY
Advanced
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.
