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.
Tides Explorer — Accurate Tides, Currents, and Marine Weather
$5.00
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.
Your first Build Kit is free with a verified email.
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 Tides Explorer: 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 location data for tidal information
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No support for user feedback or reviews
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of notifications for tide changes
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Not user-friendly for beginners
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.
Tides Explorer — Accurate Tides, Currents, and Marine Weather Tides Explorer is a precision tide and current app for sailors, boaters, paddlers, and swimmers, built on official NOAA data covering over 6,000 stations across the United States and international waters. It helps you understand not just what the water will do, but when and why, using clear charts and reliable predictions you can plan around. Core Features Get accurate tide and current predictions straight from NOAA, with fast search by name or location and interactive charts for exploring and comparing stations. At supported stations, see real observed water levels laid over the prediction (Pro) — so you know what the water's actually doing, not just what it's supposed to do. Save your favorite spots for quick access (Pro), track real-time weather at supported stations — wind, air and water temperature, and barometric pressure (Pro) — and check sun, moon, and twilight times to help plan your time on the water. Plan Around What Matters to You Drag a custom reference line onto any favorite station's chart — on a current station, mark a safe velocity to catch slack water before transiting a pass — and see exactly when you're above or below it. Set alerts for high and low tides, current extremes, your reference line, or slack water itself (Pro), plus new Moon Over Water alerts for when moonrise or moonset lines up with the water near sunset or sunrise. Designed for Apple Platforms Tides Explorer includes Home and Lock Screen widgets and a full Apple Watch app with multiple complications, all optimized for iPhone, iPad, and Apple Watch. Built for the Water Ideal for sailing, boating, kayaking, swimming, fishing, and coastal exploration, Tides Explorer delivers dependable marine data without clutter, so you can plan confidently and focus on the water.
Written user reviews are not shown here. Check current App Store reviews >
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.
Not assessed in a Build Kit yet.
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.