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
StormTracker 13
This app can save your life during severe weather! Get all the weather information you need, severe weather warnings, from the trusted source — Spencer Adkins and the StormTracker 13 Weather Team
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.9
42 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 included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 StormTracker 13: 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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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
Implement a more reliable weather data API.
Assumption to check: Inaccurate weather forecasts
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize alerts and notifications.
Assumption to check: Limited customization options
Validate with people who use this workflow before building.
Hypothesis 3
Optimize the radar map for faster loading and updates.
Assumption to check: Lagging radar map updates
Validate with people who use this workflow before building.
Hypothesis 4
Offer an ad-free subscription model.
Assumption to check: Ads disrupting user experience
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
This app can save your life during severe weather! Get all the weather information you need, severe weather warnings, from the trusted source — Spencer Adkins and the StormTracker 13 Weather Team. Get instant access to your 7-day forecast, HD Dual Live Doppler interactive radar and the "Predictor" forecast model in this FREE app. · Our team of 8 full-time meteorologists know the everything about weather that is so unique to the Kanawha Valley and West Virginia, Kentucky Ohio Tri-State region. That's more than 100 years of combined forecasting experience in this app. · Enable notifications, and you'll know what's happening at your current location and be alerted to severe weather 24 hours a day. · Use the new Stormtracker 13 interactive map you can see what's happening where you are and check on family members anywhere in the country! · Watch latest video forecasts from the StormTracker 13 Weather Team. CUSTOMIZED ALERTS *Twisting Storm Alerts - Featuring the Baron Tornado Index, these exclusive alerts have a simple 1-to-10 ranking on the possibility of a tornado in an approaching storm. This ranking is more local and accurate than any system ever designed. *Special StormTracker Alerts - Fully automated weather alerts, in your hand and on your phone are simple to use. These alerts are more specific than weather sirens. These can alert you up to 15 minutes before the storm hits! *Breaking News Alerts: Keep informed with StormTracker 13 ALERT news updates on important stories near you. *Lightning Alerts: Get real-time alerts for your GPS location and know where lightning strikes near you.
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.
SUGGESTED BUILD STACK
React Native
Expo
Axios
Zustand
react-native-maps
Firebase
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.
