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.
RainTotal is your virtual rain gauge — a rainfall and precipitation tracker that shows you exactly how much rain fell and how much is expected at any location in the United States.
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 RainTotal: Virtual Rain Gauge: 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 data visualization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulties in logging data accurately
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of push notifications for rainfall alerts
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchase confusion
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.
RainTotal is your virtual rain gauge — a rainfall and precipitation tracker that shows you exactly how much rain fell and how much is expected at any location in the United States. Unlike other weather apps, RainTotal gives you precise live precipitation totals down to your exact coordinate — not just a city-wide estimate. See how much rain fell in the last hour, this week, or over the past year with detailed breakdowns, historical comparisons, forecasts, and rain alerts. Perfect for farming, gardening, construction, outdoor planning, and landscaping. Share precise rainfall data and maps with your neighbors, clients, and team in just a tap. Key Features: SEE EXACTLY HOW MUCH RAIN FELL • Observed rain totals for the last 12h, 24h, 48h, 72h, 7 days, 30 days, month-to-date, and year-to-date • Pinpointed to your exact location, not a regional estimate • Enter an address or tap any spot on the interactive rain map to see rainfall totals • Perfect for fields, job sites, and trails without a street address • See precipitation data in your preferred units TRACK MULTIPLE LOCATIONS • Save, monitor, and compare precipitation across all your locations in one view • Organize them into custom groups COMPARE RAINFALL OVER TIME • See hour-by-hour, daily, monthly, and yearly precipitation history • Compare yearly totals to 30-year climate normals • Monthly and yearly rainfall totals trend analysis • Know if conditions are wet, dry, or normal PLAN AROUND THE FORECAST • 10-day weather forecasts with hourly breakdowns • Temperature, precipitation totals, feels like, humidity, wind, gusts, cloud cover, dew point, and UV index • Severe weather alerts • Decide if today's the day or if you should wait LIVE PRECIPITATION RADAR & FORECAST LAYERS • Watch rain move in real time • Tap anywhere on the map to check observed or forecast precipitation • 16 forecast layers covering the next day to the next several days SET CUSTOM RAIN ALERTS • Get alerts the moment rainfall at your saved locations crosses a threshold you set • Choose what time you want to receive alerts • Know when to skip watering, delay a pour, or head out to ride MONITOR SNOW, DROUGHT, AND SOIL CONDITIONS • Snow depth and snow water equivalent maps • US Drought Monitor status overlays • Soil moisture levels • Essential for ranchers, growers, and anyone tracking ground conditions year-round SHARE PRECISE DATA IN A TAP • Send rainfall totals and maps to neighbors, clients, or your team instantly ICLOUD SYNC ACROSS DEVICES • Your locations and groups stay in sync across iPhone and iPad automatically • No account creation necessary Built for: Agriculture • Construction • Gardening • Landscaping • Outdoor planning • Trails & recreation • Stormwater management • Drought monitoring Start free. Upgrade to Standard or Premium to unlock up to 50 saved locations, advanced precipitation features and extended history. Privacy Policy: https://raintotal.app/privacy-policy Terms of Use: https://raintotal.app/tos
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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.