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
Rainbow AI: Weather Radar
Rainbow Weather (formerly Rainbow.ai) is a hyperlocal weather app that helps you keep your plans for the day and not get wet.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
687 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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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.
JavaScript is required to complete mailbox verification.
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 Rainbow AI: Weather 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.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 customize the UI and weather notifications more extensively.
Assumption to check: Limited customization options for user preferences
Validate with people who use this workflow before building.
Hypothesis 2
Integrate multiple weather data sources to improve accuracy.
Assumption to check: Inaccurate weather data in some regions
Validate with people who use this workflow before building.
Hypothesis 3
Provide an ad-free experience for paid users without compromising functionality.
Assumption to check: Overwhelming ads in free version
Validate with people who use this workflow before building.
Hypothesis 4
Optimize app performance for better responsiveness during peak times.
Assumption to check: Slow performance during high traffic
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
Rainbow Weather (formerly Rainbow.ai) is a hyperlocal weather app that helps you keep your plans for the day and not get wet. Get extremely precise rain forecasts, check the future radar and plan your daily activities accordingly. Whether you are going for a run, visiting the zoo with your kid, or walking a dog - Rainbow Weather will help you to plan your activities and not get caught in the rain. The app will alert you about upcoming rainfalls: from a little rain to a downpour so that you can adjust your plans in time. The power of Rainbow Weather at your fingertips: - Down-to-the-minute rain forecast for your location. - Upcoming weather changes for your place of stay. - High-quality radar info on an interactive map to plan your trips. - Extremely precise rain & snow forecast for the next 2 hours. - Rain & Snow notifications - precipitation alerts for your location. - Dark mode for a better viewing experience and eye comfort. Rainbow Weather provides you with the essential, precise and timely weather data at any time you need it. Stop changing your plans due to the bad weather - with Rainbow Weather you are in charge! Check the rainfall forecast for your location now! Note: The payment will be charged to your Apple ID account during the purchase confirmation. Unless the subscription is canceled at least 24-hrs before you active plan due to renew date it'll be renewed automatically. Your account will be charged for the subscription renewal within 24 hours before the end of the current period. The cost of the subscription depends on the Subscription Plan you've chosen. To manage, cancel and check your subscription go to your App Store account settings. Privacy Policy: https://www.rainbow.ai/privacy-policy Terms of Use: https://www.rainbow.ai/terms-of-use Have some questions? Contact us via email: [email protected]
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Supabase
Axios
react-navigation
react-native-maps
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.
