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
byAir: Flight Tracker & Status
Stay ahead of every flight with byAir - get live flight updates, delay predictions, and airport guidance before you need them.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
194 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 included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 byAir: Flight Tracker & Status: 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
Include more airlines and real-time updates for comprehensive coverage.
Assumption to check: Limited flight tracking options for smaller airlines.
Validate with people who use this workflow before building.
Hypothesis 2
Offer an ad-free experience for premium subscribers.
Assumption to check: In-app ads can be intrusive during use.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a more reliable data source for real-time information.
Assumption to check: Occasional inaccuracies in flight status updates.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the UI for better user focus on critical flight information.
Assumption to check: User interface can be cluttered with too much information.
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
Stay ahead of every flight with byAir - get live flight updates, delay predictions, and airport guidance before you need them. Trusted in the cockpit. Loved on every trip. No ads. Privacy first. ▶ Track What Matters, Instantly • Live Flight Updates Search and track flights in real time - get live status updates, estimated arrival/departure times, terminal and gate info, route, distance, duration, and remaining flight time. • Delay Prediction Plan ahead, not last-minute - byAir Predict monitors your flight starting six hours before departure, analyzing inbound aircraft, weather, airport congestion, and air traffic data. • Inbound Plane Status No surprises at the gate - see where your incoming aircraft is coming from and get aircraft details, so you know what to expect before it even lands. • Friends & Family Sharing No more "landed yet?" texts - let loved ones track your flights in real time. Keep them updated automatically on any changes. • Live Activities & Widgets Right on your lock screen - instant notifications for delays, gate changes, cancellations, and more info with Live Activities and widgets. ▶ Your Flight History, On Autopilot • Personal Flight History Every flight you've ever taken, beautifully organized - explore aircraft details, visited countries, and airports. Visualize your journeys on a map and share your travel moments • Auto-scan Email & Calendar No more manual entry - connect your email once and byAir will automatically detect and add your upcoming flights as new bookings arrive • Import from Other Apps Keep all your flight data in one place - easily import your flight history from FlightRadar24, App in the Air, Flighty, TripIt, OpenFlights, and more • Personal Flight Tracking MCP One link, every assistant - use your personal MCP link to bring flights, trips, airport context, and travel history into Claude, Perplexity, Codex, and more. ▶ Arrive Prepared, Every Time • Airport Guide with Travel Tips Navigate airports like a local - find the fastest security lanes, best food spots, quietest lounges, and insider shortcuts, verified by travelers • Live Flight Board Never miss a change - real-time arrivals and departures for every airport, updated every minute • One-Tap Check-In Skip the queue - direct access to airline check-in pages, so you get your boarding pass faster. • Taxi & Transport Options Worldwide Door to gate, sorted - find taxi and public transport options for any airport. Plan your travel to and from airports seamlessly Stay ahead of every flight - download byAir today! Privacy policy: https://byairapp.com/privacy_and_terms Contact [email protected] for any assistance with our app
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.
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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.
