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
Norwegian Cruise Line
Get even more out of your vacation with more features, more control, and more simplicity - all in the palm of your hand.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
215,798 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/
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 Norwegian Cruise Line: 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
Add more advanced filtering options like price range, amenities, and duration.
Assumption to check: Limited search filters for cruises
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time messaging for faster communication.
Assumption to check: In-app messaging can be slow
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the booking process with clearer steps and progress indicators.
Assumption to check: Booking flow can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate AI-driven suggestions based on user preferences and past bookings.
Assumption to check: Lack of personalized recommendations
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
Get even more out of your vacation with more features, more control, and more simplicity - all in the palm of your hand. Norwegian Cruise Line’s updated app makes it even easier to tailor your perfect vacation. Take full advantage of our endless experiences and wide variety of dining, entertainment, excursions, activities, and more. See comprehensive onboard schedules, view extensive excursion details, browse updated menus, view entertainment listings, and make reservations for experiences onboard our ships and at our incredible destinations. Above all, prepare for your cruise with ease – your vacation begins the moment you board! BEFORE YOU EMBARK… Discover your detailed itinerary with your pre-cruise planning checklist guiding you every step of the way. Make reservations for your favorite activities include excursions, entertainment, dining, and our exclusive Vibe Beach Club. Keep track of these activities with My Plans – outlining all of your vacation fun right at your fingertips. To speed up your boarding process, complete our simplified Online Check In experience. Get excited by counting down the days until you board one of our incredible Norwegian Ships! ONCE ONBOARD… Connect to the ship’s complimentary internet to use the app free of charge. Keep track of your favorite activities by having the Freestyle Daily just a tap away! Hungry? Make new dining reservations and browse the menus of our incredible dining offerings. Explore our incredible destinations by booking one of our incredible shore excursions. Keep track of your daily expenses and purchases in real time. Reserve and enjoy are incredible entertainment offerings. Never miss an activity with My Plans keeping you up to date for your next great adventure.
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
Axios
React Query
Firebase
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.
