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.
++ Recommended by 9to5Mac and iPhone-ticker.de ++
Free · 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 Custom Weather App: Sonuby: 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 customization options for weather alerts
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inaccurate weather data at times
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Cluttered UI with too much information
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No offline mode for weather data
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.
++ Recommended by 9to5Mac and iPhone-ticker.de ++ Sonuby is a fully customizable weather app with widgets, forecasts, and detailed reports — tailored to your daily life and activities. Whether you need a simple daily forecast or specialized conditions for sailing, drone flying, or skiing, Sonuby adapts to how you use weather. DRONE & UAV FORECAST WITH THE DRONE FLYING REPORT Drone & UAV flying requires precise wind, cloud and visibility forecasts. The Drone Flying Report provides comprehensive views of all UAV-relevant variables including altitude weather and air quality conditions. SAILING FORECAST WITH THE SAILING REPORT The Sailing Report delivers marine weather forecasts for sailors and boating enthusiasts. Wind, swell, visibility, tide and current forecasts provide accurate marine conditions worldwide. SKI & SNOWBOARD FORECASTS WITH SNOW SPORTS REPORT Perfect for mountain skiing and snowboarding adventures. The Snow Report provides detailed snow depth, snowfall, and mountain weather conditions for every mountain worldwide. AVAILABLE REPORTS - Daily Life - Drone Flying (UAV) - Sailing & Marine - Hiking & Mountain Climbing - Health (incl. Air Quality & Pollution) - Skydiving - Snow Sports (Ski & Snowboard) - Surfing & Swell - Photography (Golden Hour & Magic Hour) CUSTOMIZABLE WEATHER WIDGETS Home screen widgets for instant weather access: - Current & Hourly Forecasts - Multi-Day Forecast - Activity-Specific: Drone (UAV), Sailing, Skiing, & More - Fully Customizable Perfect for quick activity planning without opening the app. HIGHLIGHTS - Weather Widgets: Customizable home screen widgets for activities like drone flying, sailing, skiing & more - Professional Forecast Maps: Detailed weather maps with radar, swell, and mountain data - Air Quality & Pollution Reports: Monitor air conditions for health - Activity-Specific Reports: Specialized forecasts for each sport and activity - Altitude Weather: Mountain weather up to high altitudes - Golden Hour & Magic Hour: Perfect timing for photography in any weather WHY SONUBY? Sonuby's high quality data comes from meteoblue. The weather provider intelligently combines different weather models such as DWD, ECMWF, NOAA and Met Office. Meteoblue's weather data has long been appreciated by experts and is particularly convincing in complex terrain such as mountains. COMPREHENSIVE WEATHER DATA Essential Variables: Temperature, humidity, barometric pressure pressure, precipitation, wind speed & gusts, UV index, cloud cover, visibility, thunderstorm risk Specialized Data: Snow depth & snowfall, swell height & direction, tide forecasts, air quality & pollution, mountain weather up to high altitudes, golden hour & sunset prediction for photography PROFESSIONAL WEATHER MAPS Interactive maps with radar, satellite, temperature, wind, swell, snow depth, and air quality visualization. Perfect for area forecasts and activity planning. Perfect for drone & UAV pilots, sailors, skiers, mountain climbers, skydiving enthusiasts, surfers, and photographers. Customizable weather widgets provide instant home screen access to the conditions that matter for your activities. Plan your activities with confidence! --- Notice about in-app purchases: Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled 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 and cancel your subscriptions by going to your App Store account settings after purchase. Cancellation of the current active subscription period is not allowed. Terms of Use: https://sonuby.com/terms-of-use-app/ Privacy Policy: https://sonuby.com/privacy-policy-app/
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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.