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
PlaneWatcher
Flight Tracking for the Apple Watch
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
23 ratings · Top 50%
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 PlaneWatcher: 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
Flight Tracking for the Apple Watch • Visualize aircraft around you, without having to reach for your phone • Worldwide, real-time, unfiltered flight data by ADSBExchange • Explore all the aircraft details like flight name, registration, type, operator, altitude, speeds and more (depending on data availability) • Aircraft following • Filter by multiple criteria • Customizable view options • Complications to match your watch faces Requires WatchOS 10.0 or higher. Built for the Apple Watch PlaneWatcher was designed specifically for the Apple Watch, providing the best possible experience on this small device. The map rotates to align with the direction you're facing, so you can easily identify aircraft that you see around you. Use the digital crown to zoom in/out and touch & drag on the screen to move around the map. Unfiltered Flight Data PlaneWatcher shows you all aircraft, unfiltered, unlike most major flight tracking apps. Made possible by ADSBExchange, the world's largest source of unfiltered flight data. If you're a frequent user, please support them (adsbexchange.com/donate) or become a volunteer feeder to help expand the service. Local & Worldwide View aircraft around your current location or jump to any airport in the world. Use the digital crown to zoom in on a busy LAX or watch aircraft taking off and landing at JFK. Aircraft Details Simply tap on an aircraft to see all its details: flight name, registration, type, category, operator, altitude, speeds and more (depending on data availability). Aircraft Following Interested in a single aircraft? Follow it as it proceeds among the other traffic. Just tap the small blue dot to exit follow mode and return to the main map. Multiple Filters Just want to see aircraft below 10'000 feet, Boeing 747s or only planes from a certain airline? You can filter by altitude, type, callsign or registration. Filters can be combined, too. Customizability Customize the display using many options. You only want to see helicopters and hide all small airports? You can do that and much more... Complications Support With many different complications available, designed to fit into all color schemes, PlaneWatcher is always just a tap away. Privacy Policy: https://www.planewatcher.app/privacy.html Terms of Use: https://www.planewatcher.app/terms.html
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
Enhance data sourcing for more comprehensive flight information.
Assumption to check: Limited flight data coverage
Validate with people who use this workflow before building.
Hypothesis 2
Implement better real-time data fetching strategies.
Assumption to check: Inconsistent updates on live flights
Validate with people who use this workflow before building.
Hypothesis 3
Redesign the UI to make it more visually appealing and user-friendly.
Assumption to check: User interface lacks modern design elements
Validate with people who use this workflow before building.
Hypothesis 4
Consider a freemium model that allows more features for free to attract users.
Assumption to check: Subscription model limits access to core features
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 Native
Expo
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react-navigation
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zustand
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.
