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.
Never miss a tornado warning - I'm looking at you, tornado alley! Get instant alerts via phone call, SMS, and email when severe weather threatens your saved locations - plus the most detailed tornado data available anywhere.
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 Tornado Tracker by TornadoPath: map the core Weather 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: Inaccurate forecasts
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Too many ads
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No hyperlocal data
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.
Never miss a tornado warning - I'm looking at you, tornado alley! Get instant alerts via phone call, SMS, and email when severe weather threatens your saved locations - plus the most detailed tornado data available anywhere. KEY FEATURES: NEW: LOCAL TAB — PERSONALIZED TO YOUR ADDRESS - See if active warnings impact your exact address - Tornado warnings, watches, severe thunderstorm & marine alerts (US & Canada) - Upcoming risk — today, tomorrow, and day 3 - Local conditions: high/low, feels like, humidity, and wind - NEW: Tornado history near you — past paths within 50 miles - NEW: Tornado warning history near you — past warnings within 50 miles - Search any US/Canada address, or use GPS - Pro: track up to 5 saved addresses LIVE TORNADO WARNINGS - Real-time tracking across all 50 states and Canada - Active warnings with polygon boundaries on maps - Affected population and county data - US and Canada population breakdowns - Broadcast audio playback for Canadian alerts - Daily activity summaries SEVERE WEATHER ALERTS - Tornado Watch monitoring - Severe Thunderstorm Warnings - Special Marine Warnings - Filter by type, state, country, and time INTERACTIVE MAPS - Live radar overlay - Precise warning polygons - Auto-zoom to warnings - Toggle active/expired alerts - Optional location display - 4 map styles: Standard, Minimal, Dark, Terrain MAP LAYERS -HD Radar (MRMS high-resolution) -Forecast Radar (predictive modeling) -Echo Tops (storm height data) -Satellite imagery (real-time) -Precipitation overlay -Storm Cells (tornado rotation & hail detection) -Base Reflectivity (raw NEXRAD radar returns) -Velocity (auto selects nearest radar, or pick any site manually) TORNADO ARCHIVE - 85,000+ historical US records since 1680 - 3,100+ historical Canadian records since 1980 - NEW: Path maps — tap any tornado to see its exact start & end - NEW: Filter by intensity, decade, deaths & path length - Event narratives with deaths & injuries - Browse by state, county, province and territory - Deadliest, longest, widest tornado stats - Monthly and time-of-day charts - EF0-EF5 intensity distribution WEATHER OUTLOOKS -Day 1, Day 2, and Day 3 tornado outlooks -Categorical risk levels -Tornado, wind, and hail probability maps -NEW: Fire Weather outlooks with wind/humidity zones -NEW: Excessive Rainfall (flash flood risk) outlooks -NEW: Snow probability outlooks -Convective Outlook and CIG support LEARN -8 guides written in plain English -Watch vs. Warning, Reading the Map, Understanding Outlooks -Understanding Radar Types, The EF Scale, Tornado Safety, How Alerts Work -NEW: The Local Tab — alerts for your exact address -No meteorology degree required CUSTOMIZATION & FEATURES - Full dark mode (Light/Dark/System) - 4 map styles to choose from - Warning details with countdown timers - Filter by state, country, and time period - iPad optimized - In-app support and sharing DATA SOURCES: - National Weather Service (NWS) - Storm Prediction Center (SPC) - Weather Prediction Center (WPC) - NOAA Storm Events Database - Apple Weather GO PRO ($39.99/year, or $149.99 lifetime) (US ONLY) -Phone calls when tornado warnings, watches and severe thunderstorms are issued -NEW: Year-round coverage — flash flood, snow squall, winter storm, blizzard, ice storm & high wind warnings -SMS texts with warning details -Email bulletins with full NWS statements -Monitor up to 5 locations -Alert 2 phone numbers -Turn each alert type on or off anytime 3-DAY RISK ALERTS — Only on Tornado Path! -Text & email up to 3 days before tornado or severe storm risk hits your area -Personalized to your saved addresses — no risk, no message -Know before the storm so you can prepare PERFECT FOR: Storm chasers, weather enthusiasts, researchers, emergency professionals, and anyone in tornado-prone areas. (Complements, not replaces, primary warning systems. Use NOAA Weather Radio for backup) Terms: https://www.tornadopath.com/terms Privacy: https://www.tornadopath.com/privacy
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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.