App Overview

Storm Shield icon

Storm Shield

Mosaic S.r.l. · Weather

Named by Time.com's @Techland as one of the best weather apps for your iPhone and Apple Watch.

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
113,559 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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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.

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.

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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Storm Shield: 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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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

Named by Time.com's @Techland as one of the best weather apps for your iPhone and Apple Watch. Severe weather alerts for your exact location. Storm Shield gives you storm-based alerts for tornado, hurricane, flood, thunderstorm, winter storms and other life-threatening weather events via voice and push notification. Storm-based alerts help reduce false alarms by alerting you to severe weather based on your exact location within a county. County-based alerts can result in false alarms, warning you when your location in the county is not within the threatened area. What people are saying: • Storm Shield "alerted our family of the Broken Arrow, OK tornado, faster than the TV and tornado sirens." - Robyn • "I was in Oklahoma City during the tornado... we were right in its path. Your app literally was a life saver." - dcalk12 Benefits: • Get voice alerts just like a NOAA weather radio via push notification anywhere in the United States. • With Apple Watch, get a tap on your wrist when alerts are issued for your locations. • Add Storm Shield's widget to your Today screen to get quick access to active alerts for the first location in your app. • Touch Storm Shield's app icon on your 3D-Touch enabled iPhone for widget access. • Hi-Def radar map is your home screen so you can quickly see what's going on at your locations. • Fully supports Dark Mode in iOS 13. • Long-tap on the map to get current conditions, hourly and daily forecasts. • Save additional locations to ensure family members stay safe. View NOAA severe weather alerts on the map to see where dangerous weather is happening: • Tap alerts to view info • Flood watches & warnings • Tornadoes & Thunderstorms • Hurricane & Tropical Storm forecast tracks • Winter storms • Marine & Coastal alerts • Radar & Clouds • Wind Speed • Snow Fall • Water Temperatures • Road Weather • Premium Weather (purchase required) • Lightning Alerts and notifications (purchase required) Enhance your app with auto-renewing monthly subscriptions: • Buy 'Premium Weather' to unlock these features and see predicted imagery for these map layers: 1) Future Radar 2) Future Clouds 3) Future Clouds & Radar together 4) Future Surface Temperature Land 5) Future Surface Temperature Water 6) Future Surface Temperature Land & Water together 7) Future Wind Speeds Map 8) Storm Tracks: See how fast storms are moving & where they're headed. • Buy 'Lightning' to unlock these 2 features: 1) Lightning strike push notifications up to 10 miles away. 2) See lightning on the map within 100 miles of a selected location. Note: • Payment will be charged to your iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • No cancellation of the current subscription is allowed during active subscription period. • Privacy Policy: https://www.stormshieldapp.com/privacy_stormshield_wxs.html • Terms of Use: https://www.stormshieldapp.com/terms_stormshield_wxs.html • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Storm Shield is made possible by The E.W. Scripps Company & KNXV Phoenix, WCPO Cincinnati, WEWS Cleveland, WXYZ Detroit, WMAR Baltimore, WFTS Tampa, WPTV West Palm, KSHB Kansas City, KJRH Tulsa, RTV6 Indianapolis, KMGH Denver, KGTV San Diego, KERO Bakersfield, WKBW Buffalo, WTVF Nashville, KMTV Omaha, WSYM Lansing, WFTX Ft. Myers, WTMJ Milwaukee, WGBA Green Bay, KIVI Boise, KTNV Las Vegas, KGUN Tucson, WTXL Tallahassee, KXXV Waco, KRIS Corpus Christi. Note: Continued use of GPS running in the background can dramatically decrease battery life.

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

Allow users to set personalized alerts for specific conditions.

Assumption to check: Limited customization for weather alerts

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the layout to enhance readability and user experience.

Assumption to check: Cluttered interface with too much information

Validate with people who use this workflow before building.

Hypothesis 3

Implement more frequent and reliable data refreshes.

Assumption to check: Inconsistent data updates

Validate with people who use this workflow before building.

Hypothesis 4

Add offline caching for previously viewed data.

Assumption to check: No offline functionality

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.

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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.