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
KLM - Book a flight
Your journey with us starts when you open the KLM app.
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.8
49,754 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 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 KLM - Book a flight: 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 advanced search filters and an intuitive interface.
Assumption to check: Users often find the search functionality limited and not user-friendly.
Validate with people who use this workflow before building.
Hypothesis 2
Streamline the booking process with fewer screens.
Assumption to check: Booking flow can be confusing with too many steps.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance visibility and importance of notifications.
Assumption to check: In-app messages and notifications are often overlooked.
Validate with people who use this workflow before building.
Hypothesis 4
Provide comprehensive flight details including amenities and services.
Assumption to check: Limited information on flight details and options.
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
Your journey with us starts when you open the KLM app. With this pocket-sized travel assistant, you can book a ticket, customise your booking, check in and get real-time flight updates. Everything required for a smooth trip is at your fingertips! BOOK A FLIGHT Select one of our many destinations and book your ticket. To save time on future bookings, add your contact information to your profile. Next time, we’ll pre-fill your details. MANAGE YOUR TRIP View the pre-travel checklist and adjust your booking at any time until check-in. Lounge access or extra legroom? Enhance your travel experience yourself with just a few taps. GET YOUR BOARDING PASS Travel with peace of mind – no need to print out your travel documents or wait in line at a check-in desk. Get your boarding pass directly in the app or add it to your Wallet. It’s so easy! YOUR FLYING BLUE ACCOUNT Check your Miles balance, book a reward ticket, modify your profile, or access your digital Flying Blue card in your personal dashboard. STAY UP TO DATE Turn on your notifications for real-time updates like gate changes and check-in times, and receive exclusive offers. Share your flight status to stay in touch with those on the ground. They’ll be happy to know you landed safely and sound.
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
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react-native-reanimated
expo-router
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.
