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.
See lightning the moment it strikes, and know the instant it's headed for you
$3.99 · 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 Real-Time Lightning by MesoSky: 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: Limited alert customization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inaccurate lightning strike data
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No historical data on strikes
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of user community features
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.
See lightning the moment it strikes, and know the instant it's headed for you. Most lightning apps blink a few dots on a plain map and call it a day. MesoSky Lightning is a different animal: a real-time storm instrument that fuses satellite lightning detection with high-definition radar into one fast, beautiful screen. If you take the sky seriously, this is the lightning tracker you've been waiting for. REAL-TIME STRIKES, STRAIGHT FROM ORBIT • Live cloud-to-ground and in-cloud flashes from the GOES-18 and GOES-19 satellites' Geostationary Lightning Mapper. Strikes appear moments after they happen. • Every strike is color-coded by strength, so one glance tells a distant flicker from a violent close hit. • Tap any strike for the full story: a strength gauge, optical energy, footprint size, exact distance, and how long ago it struck. WIDGETS! Lock Screen, Home Screen WATCH APP with MAP! YOUR STRIKE BUBBLE • Draw a radius around your live location, or pin any spot, from 1 to 100 miles. • See the nearest strike's distance and direction, the total count around you, and how many are strong or intense, all updating live. ALERTS THAT RESPECT YOU • Get a push the instant lightning enters your bubble, even with the app closed. • You set the rules: how often you're notified (every 5, 15, or 30 minutes) and for how long (the next hour, 6 hours, 12 hours, or until you turn it off). • No spam, no nagging. Just the heads-up you actually want. HIGH-DEFINITION RADAR UNDERNEATH • Full-resolution NEXRAD Level 2 base reflectivity, rendered live. The same data meteorologists use, auto-tuned to the closest radar to you. • Dial in the dBZ filter and opacity to see exactly the storm you care about. READ THE STORM AT A GLANCE • Intensity glow that heats up where the strongest strikes cluster. • Footprint and activity overlays that turn storm chaos into a clear read. RIGHT ON YOUR WRIST • A live lightning map on your Apple Watch, centered on you or anywhere you pan, with every strike color-coded by strength just like the phone. • Tap any strike on your wrist for its strength, distance, direction, age, and footprint. • Set your time window (15, 30, or 60 minutes) and toggle intensity coloring right from the watch. • Watch face complications keep the strike count, the closest strike's distance and direction, and how many are strong or intense one glance away. • Your complications stay current, so a flick of the wrist is always a fresh read on the sky. BUILT BEAUTIFULLY • A clean, fast, glass interface designed to be understood in a flash. Full dark, fluid motion, and haptics throughout. PAY ONCE. THAT'S IT. • One simple purchase. No subscriptions. No ads. Ever. • Your location is used only to center the map and power your alerts. Never sold, never used to track you. Whether you're a storm chaser, pilot, golfer, coach, or a parent watching the sky over the ballfield, MesoSky Lightning gives you the clearest, fastest read on the sky in your pocket. Buy it once. Watch the storm like a pro.
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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.