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
Hand luggage
Can't get much simpler than that!
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
3 ratings · Below Average
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/
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 Hand luggage: map the core Navigation 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
Ensure thorough testing and user feedback for improvements.
Assumption to check: Low user ratings indicate poor user experience or bugs
Validate with people who use this workflow before building.
Hypothesis 2
Add more functionality like offline access and personalized packing suggestions.
Assumption to check: Limited features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 3
Focus on UI/UX design to enhance user engagement.
Assumption to check: Lack of engaging design
Validate with people who use this workflow before building.
Hypothesis 4
Implement user accounts to save packing lists and preferences.
Assumption to check: No user accounts for saving preferences
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
Can't get much simpler than that! Do you have to take a flight and you don't know the allowed size of carry-on baggage? With Hand luggage you can have on hand the complete and updated list of the allowed sizes of carry-on luggage of all the airlines in the world! Do you want more? In addition you will have a link of every page of the airline to see if the size has changed or read the update from your prefer airline. You can can have your own list of things that you need to take with you and check if you have taken or not! So... never forget your toothbrush! The airlines included are like 100, here some of that: Aer Lingus Aeroflot Aerolineas Argentinas Aeromexico Air Baltic Air Berlin Air Canada Air Dolomiti Air Europa Air France Air Malta Air New Zealand Alitalia All Nippon Airways American Airlines Austrian Airlines Blue Panorama Bmi British Airways Brussels Airlines Cathay Pacific China Airlines Czech Airlines Delta Airlines Easyjet Emirates Etihad Airways Finnair Germanwings Hop (Air France) Iberia Japan Airlines Jet2.com KLM Korean Air LAN LOT Lufthansa Malaysia Airlines Meridiana Olympic Airlines Pegasus Airlines Philippine Airlines Qantas Qatar Airways Ryanair Scandinavian Airlines Singapore Airlines Swiss International Airlines TAM Tap Air Portugal Thai Airways Transavia United Airlines U.S. Airways Vietnam Airlines Virgin Atlantic Volotea Vueling WizzAir And if you can't find something, you can add yourself to the app! All the informations were found online. Logos and trademarks are property of their respective owners.
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
Zustand
React Navigation
AsyncStorage
shadcn/ui
BUILD KIT DIFFICULTY
Starter
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.
