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
Madeira Weather
With ‘madeira Weather' you will never need to refer to highly complex websites or wait for the official weather report, to know the weather in the Madeira Archipelago.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
2 ratings · Top 30%
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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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 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 Madeira Weather: 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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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 manually add and edit locations, not just based on GPS.
Assumption to check: Limited location options, users want more customization
Validate with people who use this workflow before building.
Hypothesis 2
Integrate multiple weather data sources for better accuracy.
Assumption to check: Inaccurate forecasts in certain weather conditions
Validate with people who use this workflow before building.
Hypothesis 3
Create a more intuitive settings interface for managing alerts.
Assumption to check: Notification settings are not user-friendly
Validate with people who use this workflow before building.
Hypothesis 4
Add real-time radar maps and push notifications for severe weather.
Assumption to check: Lack of interactive features like radar or severe weather alerts
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
With ‘madeira Weather' you will never need to refer to highly complex websites or wait for the official weather report, to know the weather in the Madeira Archipelago. Now you can consult the weather forecast for any locality, including some strategic places like ‘Pico do Arieiro’, ‘Pico Ruivo’ and ‘Rabaçal’, well known other locations with fantastic views and walks. Connect your tablet or smartphone to the Internet, download a small data file and use your updated forecast for the rest of the day, no need for constant downloads and expensive bills. Unlike other weather services, the madeiraWeather uses high-resolution mathematical models. New functionalities will be added in the future. Do not hesitate to contact us and let us know your difficulties and suggestions! * Key Features * => Forecasts in a Map: quickly get a glimpse of the weather across the island, by viewing the forecast icons overlaid onto a map. Use the zoom to view full resolution. => All places: browse through a list of forecasts organized by locality. Besides icons representing the weather you may also view the predicted values for temperature, humidity and wind. Consult the legend for details on each icon. => More details: access more detailed weather information in each locality. => Favorites: want browse forecasts in a list of locations of your choice? Open sites individually and add them to your ‘Favorites’ list. => Satellite images: use this option to view the satellite images from EUMETSAT-RGB, centered over Madeira Archipelago. Sequence of images usually hosts data for three consecutive days, with snapshots available several times a day. => Time-navigation for up to three days, with hourly forecasts for all your favorite locations. Beyond three days any forecasting system becomes too unreliable to trust. * Some Notes * Forecasts are mathematical calculations and should be used with care. In fact, the information provided by ANY prediction systems is only indicative. As such, CIIMAR-Madeira cannot be held liable for any incorrect information and / or inaccuracy, and for any consequences that may arise.
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Screenshots
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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
axios
react-navigation
react-native-maps
BUILD KIT DIFFICULTY
Intermediate
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.
