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.
The Hopper app has helped over 100 million travelers find and secure the best price on flights, hotels, homes and car rentals - each and every time they book their trips.
Free · In-app purchases
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 Hopper: Flights, Hotels & Cars: 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: Long loading times for search results
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Confusing user interface for new users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited filtering options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app messaging issues
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.
The Hopper app has helped over 100 million travelers find and secure the best price on flights, hotels, homes and car rentals - each and every time they book their trips. Book Flights, Hotels, Homes & Rental Cars Find millions of flights, hotels, homes, rental cars (and cute bunnies) – all in one app. Book your trip safely and securely, in just a couple taps and a swipe. Always Get the Best Price You can watch a trip right in the app and we’ll send you a notification when it’s the best time to buy — recommending you to book now, or maybe wait just a little longer. Easily Find The Cheapest Travel Dates Simply search your preferred destination and use Hopper’s color-coded deals calendar to easily find the cheapest travel dates for your trip. Travel with Confidence Avoid fees and frustration! Make any trip flexible with Hopper’s Cancel and Change for Any Reason plans. Get instantly rebooked without extra costs if your flight is delayed or you miss a connection with Hopper’s Flight Disruption Guarantee. Travel stress free with 24/7 access to Hopper’s Customer Support. Help the Planet, One Booking at a Time. With every booking that occurs on Hopper, we pledge to plant 2 trees to offset the carbon footprint. To date, we’ve planted over 31 million trees. Hopper has no ads, no spam, and no stress — just accurate predictions and travel deals. So what are you waiting for? Start saving money with the bunny today. Download Hopper for free now, and let’s start planning your next trip! Hopper Love • “The 10 Best Free Apps for Air Travel Junkies” - TIME • “The Most Downloaded OTA in the U.S. in 2021” - Apptopia • “The app helps travelers find the cheapest flights, hotels and rental cars.” - The Points Guy • “Compared to exact searches on Expedia, Kayak and Orbitz, we regularly found that the deal quoted on Hopper was the best” - Travel and Leisure • “Hopper can be a better option than direct booking for those who need more flexibility.” - The Wall Street Journal • “Find me a hotel on Hopper!” - The Late Late Show with James Corden • “Travel Unicorn Hopper First Came for Expedia. Airbnb Is Next” - TechCrunch • “Hopper is committed to offsetting the carbon emissions of every flight and hotel stay it sells.” - Forbes, The Top 100 Most Customer-Centric Companies of 2022 Say Hello to the Bunnies Facebook: https://www.facebook.com/hoppertravel Instagram: @hopper Twitter: @hopper Website: http://www.hopper.com Need support? Head over to https://help.hopper.com to find answers to frequently asked questions. You can also reach us toll-free at +1-833-933-4671 if calling from US or Canada, or at +1 (347)-695-4555 if calling from outside the US or Canada.
Written user reviews are not shown here. Check current App Store reviews >
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.