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.
Plan, book, and manage your hotel and resort stays with ease
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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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for World of Hyatt: Book Hotels: 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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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
Assumption to check: Limited search filters compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app messaging can be slow
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Booking process can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Loyalty program details are unclear
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Plan, book, and manage your hotel and resort stays with ease. With the World of Hyatt app, enjoy the best rate guaranteed when you book direct, making every journey seamless and rewarding. Not a member yet? Join for free to get exclusive rates and earn points towards travel rewards MANAGE YOUR STAY WITH CONVENIENT FEATURES - Book hotel stays with World of Hyatt points, cash or both - Explore hotel photos, details, offers, local attractions, and more for effortless trip planning - Save your favorite hotels and resorts for future travel - Add your hotel reservations and World of Hyatt membership card to Apple Wallet - Bypass the front desk with mobile check-in, digital key, and express checkout - See your room charges in real-time - View and download folio from previous stays MAKE YOURSELF AT HOME - Request items to your room, such as extra pillows, towels and toothpaste (where applicable) - Order room service (where applicable) - Stream your favorite shows on your in-room TV with Google Chromecast (where applicable) ACCESS YOUR LOYALTY PROGRAM ACCOUNT - Track your progress toward elite status and Milestone Rewards - View your current member benefits and explore other elite tier benefits - Track your progress towards free nights via our Brand Explorer - View and redeem points, and track available for redemption - Register for new offers and track your progress towards earning directly in the app Available in English, Spanish, German, French, Japanese, Chinese (Simplified and Traditional) and Korean About Hyatt Hotels Corporation Hyatt Hotels Corporation, headquartered in Chicago, is a leading global hospitality company guided by its purpose – to care for people so they can be their best. As of March 31, 2025, the Company's portfolio included more than 1,450 hotels and all-inclusive properties in 79 countries across six continents. The Company's offering includes brands in the Luxury Portfolio, including Park Hyatt®, Alila®, Miraval®, Impression by Secrets, and The Unbound Collection by Hyatt®; the Lifestyle Portfolio, including Andaz®, Thompson Hotels®, The Standard®, Dream® Hotels, The StandardX, Breathless Resorts & Spas®, JdV by Hyatt®, Bunkhouse® Hotels, and Me and All Hotels; the Inclusive Collection, including Zoëtry® Wellness & Spa Resorts, Hyatt Ziva®, Hyatt Zilara®, Secrets® Resorts & Spas, Dreams® Resorts & Spas, Hyatt Vivid Hotels & Resorts, Sunscape® Resorts & Spas, Alua Hotels & Resorts®, and Bahia Principe Hotels & Resorts; the Classics Portfolio, including Grand Hyatt®, Hyatt Regency®, Destination by Hyatt®, Hyatt Centric®, Hyatt Vacation Club®, and Hyatt®; and the Essentials Portfolio, including Caption by Hyatt®, Hyatt Place®, Hyatt House®, Hyatt Studios, Hyatt Select, and UrCove. Subsidiaries of the Company operate the World of Hyatt® loyalty program, ALG Vacations®, Mr & Mrs Smith, Unlimited Vacation Club®, Amstar® DMC destination management services, and Trisept Solutions® technology services. For more information, please visit www.hyatt.com.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.