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
Aurora Forecast.
Aurora Forecast answers one question: can you see the aurora tonight, from where you are? It brings together NOAA space weather, the sky above you, and reports from people nearby who are watching it right now.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
4,895 ratings · Top 15%
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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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.
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 Aurora Forecast.: 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
Aurora Forecast answers one question: can you see the aurora tonight, from where you are? It brings together NOAA space weather, the sky above you, and reports from people nearby who are watching it right now. — SEE IT AS IT HAPPENS — When people near you spot the aurora, their reports appear on the map and on the Home tab, showing how many have seen it within 100 km and how close the nearest one is. Seeing it yourself? Share it in one tap. No account needed, and every location is blurred to about 1 km before anyone else sees it. — KNOW BEFORE THE SKY GLOWS — • NOAA OVATION 30-minute aurora forecast on a map and a 3D globe • Aurora probability for your exact location • Kp index history, 3-day forecast and 27-day outlook • Live solar wind: speed, density and magnetic field (Bz) • Cloud cover, moon phase, sunrise and sunset • Live aurora webcams and real-time images of the Sun • Aurora hotspots: well-known viewing spots, including dark-sky parks • Aurora Guide, plus Stories & News from the world of the aurora — AURORA INTELLIGENCE (ULTIMATE) — One clear answer to "Should I go out now?", weighing the forecast, the clouds above you, the moonlight and reports from people nearby. On iPhones with Apple Intelligence it runs on your device; otherwise it uses our cloud AI. — ALERTS, WIDGETS AND APPLE WATCH — • Aurora alerts for your location (Pro) • Apple Watch complications (Pro) • Home Screen and Lock Screen widgets (Ultimate) • Detailed cloud cover by altitude (Ultimate) — ON EVERY SCREEN — iPhone, iPad, and iPhone Duo open or folded, in 32 languages. — SUBSCRIPTIONS — The forecast, maps, live data, webcams and community reports are free. • Aurora Pro, monthly or yearly: aurora alerts and Apple Watch complications • Aurora Ultimate Pro, monthly or yearly: everything in Pro, plus Aurora Intelligence, widgets and detailed cloud cover Prices are shown in the app in your local currency. Payment will be charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscriptions in Settings > [your name] > Subscriptions. Privacy Policy: https://www.tinacinc.com/AuroraForecast/privacy_policy.html Terms of Use: https://www.tinacinc.com/AuroraForecast/terms_of_conditions.html
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
Implement improved geolocation services for better accuracy.
Assumption to check: Limited location accuracy for weather data.
Validate with people who use this workflow before building.
Hypothesis 2
Provide clearer descriptions and trial options for subscriptions.
Assumption to check: In-app purchase options can be unclear.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance push notification reliability.
Assumption to check: Notifications can be delayed.
Validate with people who use this workflow before building.
Hypothesis 4
Streamline UI for a cleaner user experience.
Assumption to check: Interface can be cluttered.
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.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
@react-navigation/native
axios
expo-location
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.
