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
Weather Time Widget
Weather, date, and word time — all in one beautiful widget.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 included17 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 Weather Time Widget: 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
Offer more widget styles and configurations.
Assumption to check: Limited customization options for widgets
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time updates and notifications for severe weather.
Assumption to check: Inconsistent data update frequency
Validate with people who use this workflow before building.
Hypothesis 3
Include air quality index and detailed hourly forecast.
Assumption to check: Lack of detailed weather information
Validate with people who use this workflow before building.
Hypothesis 4
Add an offline mode to view previously fetched weather data.
Assumption to check: No offline capabilities
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
Weather, date, and word time — all in one beautiful widget. Weather & Time Widget gives you everything you need at a glance, right on your home screen. No need for separate clock and weather widgets taking up space. One widget does it all. Pay once, enjoy forever. No subscriptions, no in-app purchases, no ads. What you get: Current temperature with high/low and feels-like Hourly and daily weather forecasts Live time and date with day of the week Humidity, wind speed, and wind direction UV index City name and location indicator Save your favorite cities: Add as many cities as you like and swipe between them in the app Search any city in the world Pin each widget to its own city, or let it follow your current location Tap a widget to jump straight to that city in the app Three widget sizes: Small — Quick current weather overview, time, date, day of the week and location. Medium — Current and forecast weather (Daily/hourly selectable), time, date, day of the week, location, humidity and wind. Large — The full picture with detailed conditions, forecast weather, wind and UV index. Choose your weather source: Open-Meteo for global coverage, with regional models for higher local accuracy NWS for enhanced accuracy in the United States, using live station observations Apple Weather, if you prefer Apple's own forecasts (in-app) Fully customizable: Dark, light, or auto theme (adapts to time of day) 24-hour or AM/PM time format Celsius or Fahrenheit — mph, m/s, km/h, or knots wind units Hourly or daily forecast view works worldwide Use your current location or search for any city Built to stay out of your way: Designed for low battery use, so a widget on your home screen costs you almost nothing Weather icons follow each city's own sunrise and sunset, so day and night are right wherever you're looking Careful icon matching tells scattered showers from thunderstorms, and broken cloud from overcast Available in English and Turkish Simple setup: Download the app Grant location access Add the widget(s) to your home screen Done
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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
axios
zustand
react-navigation
expo-location
BUILD KIT DIFFICULTY
Starter
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.
