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
Tripadvisor: Plan & Book Trips
One app, so many places to discover
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
479,988 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 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 Tripadvisor: Plan & Book Trips: 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
Simplify search and filtering options.
Assumption to check: Overwhelming options can confuse users.
Validate with people who use this workflow before building.
Hypothesis 2
Streamline the booking flow with fewer screens.
Assumption to check: Booking process can be lengthy.
Validate with people who use this workflow before building.
Hypothesis 3
Introduce a verification system for reviewers.
Assumption to check: Inconsistent review quality.
Validate with people who use this workflow before building.
Hypothesis 4
Implement real-time chat features.
Assumption to check: In-app messaging can feel slow.
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
One app, so many places to discover. Get guidance from millions of travelers and earn rewards for more trips by doing what you love: planning, booking, and sharing. The best part? It’s free to join. Score last-minute tour tickets in a few quick taps. Book a hotel your entire family will love at a great rate. Create an itinerary in seconds with top recs from travelers like you. All while earning Trip Cash to fuel even more vacays. You bring the fun, the Tripadvisor app brings the rewards. Tripadvisor Rewards: Plan, book, share, earn rewards - Book from over 400,000 experiences and 600,000 hotels, and get 5% back in Trip Cash to save on future trips - Earn beyond booking: Planning and sharing can net you Trip Cash too - Join for free in the app! Plan all in one place - Save your favorite hotels, restaurants, and experiences - Get custom recs based on your saves with AI trip builder - Keep all your itineraries, trip ideas, and bookings organized in one place Go with the flow - Discover top-rated recs nearby, wherever you are - Stay flexible with free cancellation on most experiences - Never miss a thing with notifications tailored to your trip Get traveler recs - Browse reviews to get the inside scoop from travelers who’ve been there - Tap into the world’s largest travel community for tips and advice wherever, whenever - Save time with AI summaries, which gives you a quick overview of what travelers are saying
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
Axios
React Navigation
BUILD KIT DIFFICULTY
Expert
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.
