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.
Spotter Tools Pro is a severe weather app for weather enthusiasts, storm chasers, and trained spotters
$19.99 · 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 Spotter Tools Pro: Storm Radar: 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: Lack of local customization for alerts
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited data on hourly forecasts
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No user feedback options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High subscription price compared to competitors
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.
Spotter Tools Pro is a severe weather app for weather enthusiasts, storm chasers, and trained spotters. GPU-rendered NEXRAD radar, live wind flow, soundings, lightning, satellite, worldwide tropical, air quality, five forecast models, IBW alerts, live chasers, and thousands of live cameras. Spotters and chasers also get Spotter Network reporting, a GPS beacon, Chaser Mode, and opt-in Presence. Buy once. No subscription, no ads, no third-party trackers. SPOTTER NETWORK REPORTING, DONE RIGHT! Tornado, funnel cloud, wall cloud, hail, measured wind, flood, flash flood, and damage, each with the exact fields Spotter Network expects. Reports queue offline and auto-upload. GPS BEACON Foreground and background beacon to Spotter Network. Configurable interval and encrypted credentials. RADAR: LEVEL 2, LEVEL III & TDWR GPU-rendered and crisp at any zoom. Single-site Level 2 decoded on-device: Reflectivity, Velocity, Correlation Coefficient, Spectrum Width, and Storm-Relative Velocity. Plus WSR-88D Level III, dual-pol (ZDR, CC, KDP, HCA), derived products (VIL, Digital Precip Rate, rotation), storm tracks, mesocyclone and TVS markers, a VAD Wind Profile, and the 45-site TDWR network. Add a Mesoanalysis layer (SPC-style severe parameters) and a Storm Cell Deep Dive. Dual-view split-screen compare. 16 .pal color tables, or import your own. ANIMATED & COMPOSITE RADAR Loop recent volumes (play, scrub, speed). Add a GPU-crisp CONUS MRMS mosaic drawn from the full product catalog, including the FLASH flash-flood suite, with up to 12-hour playback and tap-to-read values. LIVE WIND & SOUNDINGS Animated surface-wind flow, speed-colored particles streaming live. Plus on-device skew-T soundings, hodographs, and full analysis: tap anywhere for a profile (balloon or HRRR). LIGHTNING, SATELLITE & TROPICAL Live GOES GLM lightning; GOES East and West satellite (Infrared, Water Vapor, Visible, GeoColor) with a radar-synced cloud loop; and worldwide tropical: outlook areas, storm cones, spaghetti tracks, intensity, and wind-arrival times. WEATHER MODELS Overlay HRRR, GFS, RRFS, NAM, and ECMWF guidance (reflectivity, temp, wind, CAPE, precip) with a time bar and legend. OBSERVATIONS & LAYERS RTMA surface observations (temperature, dew point, theta-e, wind, gusts), MRMS observed precipitation, METARs, EPA AirNow air quality, and WPC surface fronts and pressure centers, all on the map. LIVE STORM CHASERS Watch major chasers stream live via YouTube and Facebook Live, right on the map. Live badges show who's on air. LIVE TRAFFIC & SKY CAMERAS Tens of thousands of DOT cameras across 37 states, plus FAA, Windy, NOAA buoy, USGS volcano, NPS, ALERTWildfire, and curated webcams. Live video where offered, stills elsewhere; fullscreen, facing-aware, source picker. SMART PUSH ALERTS Background NWS warnings with a polygon preview. Filter modes: Standard, Outbreak, and PDS/Emergency only. Watch zones: current location, home, city, state, or nationwide. Severe-alert tone, plus optional Critical Alerts so a Tornado Emergency or PDS warning sounds through silent mode and Focus. Each warning shows an estimated population inside the polygon. NWS & SPC ON THE MAP - 50+ NWS warning polygons, toggleable - Tornado and severe thunderstorm watch boxes - SPC Mesoscale Discussions and WPC flood discussions, full text on tap - Outlooks: convective Day 1 to 8, thunderstorm, excessive rainfall, fire weather, winter storm severity, CPC 6 to 10 day, drought - SPC storm reports plus the live Spotter Network feed MORE City and place search, long-press map menu, distance and bearing tools, freehand drawing, storm-track projection, and control chips. Optional account and opt-in Presence to see other users on the map. Per-event colors, county and state lines, 6 themes (OLED black). Privacy Policy: https://spottertoolspro.vercel.app/privacy Terms of Service: https://spottertoolspro.vercel.app/terms Support: [email protected]
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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.