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 world's best flight tracker app - #1 Travel app in over 150 countries.
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 Flightradar24 | Flight Tracker: 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: Overwhelming amount of flight data can be confusing for users.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchase process can be unclear or confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited customization options for alerts.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Real-time data may occasionally lag.
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 world's best flight tracker app - #1 Travel app in over 150 countries. Turn your iPhone or iPad into a live flight tracker and see planes around the world move in real-time on a detailed map. Or point your device at a plane to find out where it’s going and what kind of aircraft it is. Download for free today and discover why millions are already tracking flights and checking flight status with Flightradar24. • Watch aircraft move around the world in real-time • Identify flights overhead & see flight information—including a photo of the actual aircraft—by simply pointing your device at the sky • See what the pilot of an aircraft sees in 3D • Tap on a plane for flight details such as route, estimated time of arrival, actual time of departure, aircraft type, speed, altitude, high-resolution photos of the actual aircraft & more. • See historical data & watch playback of past flights • Tap on an airport icon for arrival & departure boards, flight status, aircraft on the ground, current delay stats, & detailed weather conditions • Search and bookmark individual flights using flight number, airport, or airline • Filter flights by airline, aircraft, altitude, speed, & more • NEW - view aircraft in 3D with hundreds of new aircraft and airline liveries added. Flightradar24 is a free app and includes all the above features. If you want even more great features from Flightradar24 there are two upgrade options—Silver & Gold—and each comes with a free trial. SILVER • 90 days of flight history • More aircraft details, like serial number & age • More flight details, like vertical speed & squawk • Filters and alerts to find and track flights • Current weather at 3,000+ airports overlaid on the map GOLD • All the features included in Flightradar24 Silver + • 365 days of flight history • Detailed live map weather layers for clouds & precipitation • Aeronautical charts & oceanic tracks showing the pathways flights follow across the sky • Air traffic control boundaries that show which controllers are responsible for a flight • Extended Mode S data — even more information about altitude, speed, and wind & temperature conditions during flight If you choose to upgrade to a Silver or Gold subscription, a payment will be charged to your iTunes account at the end of the free trial period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your account settings in the iTunes Store. Silver and Gold upgrade prices are listed in the app as they vary depending on your country and currency. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. HOW IT WORKS Most aircraft today are equipped with ADS-B transponders that transmit positional data. Flightradar24 has a rapidly growing network of 50,000 ground stations to receive this data that then shows up as aircraft moving on a map in the app. In an expanding number of regions, with the help of multilateration (MLAT), we’re able to calculate the positions of aircraft that don’t have ADS-B transponders. Coverage is subject to change at any time. CONNECT WITH US We love getting feedback on FR24. Since we’re unable to respond directly to reviews, you can contact us directly and we’ll be happy to assist. • Email ([email protected]) • X (@Flightradar24) • Facebook (@Flightradar24) • YouTube (@Flightradar24DotCom) DISCLAIMER The use of this app is strictly limited to entertainment purposes. This specifically excludes activities that might endanger yourself or the lives of others. Under no circumstances will the developer of this app be held responsible for incidents resulting from the use of the data or its interpretation or its use contrary to this agreement. Terms of Service: https://www.flightradar24.com/terms-of-service EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
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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.