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
TripIt: Travel Planner
Join nearly 20 million travelers on the world's highest-rated travel planner app for trip and itinerary organization!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
312,893 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 TripIt: Travel Planner: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Join nearly 20 million travelers on the world's highest-rated travel planner app for trip and itinerary organization! TRAVEL ITINERARY As soon as you book a flight, hotel, rental car or other travel plan, simply forward it to [email protected] and we’ll automatically add it to your comprehensive itinerary. Seamlessly sync travel plans to your calendar or share them with anyone you choose. RESERVATION DETAILS No more frantically searching through your inbox for important details about your travel plans, like when your flight gets in or the confirmation number for your hotel. Find them in a flash with TripIt — even when you’re offline. Access this information hands-free with Siri shortcuts! Upload PDFs, photos, boarding passes, digital passport QR codes and more to your travel itinerary, so you can track everything in one place. MAPS AND DIRECTIONS The TripIt app includes all the map-related tools you’ll need on-the-go (it’s great for road trips). - Plot out your entire trip on Google Maps or Apple Maps - Quickly pull up transportation options and driving directions between two points - Easily locate the closest restaurants, parking, ATMs and more TRIPIT PRO For roughly the price of checking your bags, upgrade to TripIt Pro to access exclusive travel perks all year long. When you upgrade, TripIt Pro will do all this for you (and more!): • Share real-time flight status alerts and check in reminders • Notify you if you're eligible for a refund if your fare price drops after booking • Track your reward programs and alert you if points are expiring • Navigate you through the airport with interactive maps • Keep you informed when a potential disruption may impact your trip Your iTunes account will be charged when the purchase is confirmed. Your TripIt Pro subscription will be good for 1 year, and automatically renew each year at $48.99 unless you turn off auto-renew at least 24 hours before your term ends. To manage your subscription, including auto-renew, visit iTunes Account Settings. FREE TRIPIT PRO FOR SAP CONCUR USERS If your company uses SAP Concur, you may receive complimentary TripIt Pro benefits that most travelers have to pay for. Make sure you’re connected to TripIt to get itineraries created for you as soon as you book, and receive a complimentary subscription to TripIt Pro, if you’re eligible. For more information, see the TripIt User Agreement (https://www.tripit.com/uhp/userAgreement) and Privacy Policy (https://www.tripit.com/uhp/privacyPolicy).
Written user reviews are not shown here. Check current App Store reviews >
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 a better dashboard view that aggregates all trip details.
Assumption to check: Users find it difficult to manage multiple trips at once.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize messaging performance and provide real-time updates.
Assumption to check: In-app messaging can be slow and unresponsive.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to add custom notes, reminders, and tags to each trip.
Assumption to check: Limited options for customizing trip details.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance visibility of premium features and provide a clear comparison chart.
Assumption to check: Subscription service may not be clear on benefits.
Validate with people who use this workflow before building.
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 Navigation
Axios
React Native Paper
Expo Location
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.
