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
Current - Surf Forecast
Current gives you physics-based surf forecasts for every break on the California coast
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
12 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.
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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 Current - Surf Forecast: 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 up to 10-day forecasts with user-friendly UI.
Assumption to check: Limited forecast duration (only 3 days)
Validate with people who use this workflow before building.
Hypothesis 2
Integrate multiple data sources for more reliable forecasts.
Assumption to check: Inconsistent data accuracy
Validate with people who use this workflow before building.
Hypothesis 3
Add user reviews and surf reports for each location.
Assumption to check: No community features
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize notifications and favorite spots.
Assumption to check: Lack of customization
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
Current gives you physics-based surf forecasts for every break on the California coast. Current is part of a movement to create more accurate and detailed surf forecasts. For any spot you can see: • Set heights and how the waves break (spilling, plunging, and more) • Swell partitions, wind, and tide on a scrollable timeline • Lull duration, waves per set, % breaking, wave energy, and surf-zone current • Water temperature so you know what wetsuit to bring Today's forecast is free for every spot. Upgrade to Current Premium for multi-day forecasts, detailed surf-zone statistics, and map overlays. Forecasts are estimates — always check real conditions and surf within your limits. - Support URL: https://currentsurf.com · Marketing URL (optional): https://currentsurf.com · Privacy Policy URL: https://currentsurf.com/privacy CURRENT PREMIUM (optional subscription) Premium Monthly — $4.99/month, auto-renews. Unlocks the full multi-day forecast: future-day surf height map overlays and detailed future-day spot statistics for every California spot. Today's forecast is always free. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews monthly unless canceled at least 24 hours before the end of the current period. Manage or cancel in your App Store settings. Privacy Policy: https://currentsurf.com/privacy Terms of Use (EULA): https://currentsurf.com/terms
Written user reviews are not shown here. Check current App Store reviews >
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 Navigation
Expo Location
Axios
React Native Maps
Zustand
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.
