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.
Savvy Navvy: Your All-in-One Marine Navigation App
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 Savvy Navvy: Boat Navigation: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Affiliate link: CloneChart may earn a commission at no extra cost
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Savvy Navvy: Your All-in-One Marine Navigation App Savvy Navvy is the ultimate marine navigation tool that simplifies charts, weather forecasts, tides, GPS tracking, and route planning—right in the palm of your hand. Whether you're out sailing, fishing, or cruising, we take the stress out of navigation, so you can enjoy your time on the water. From smart routing to real-time GPS positioning and marine weather forecasts, savvy navvy helps you make safer, smarter decisions on the go. Navigate confidently, with up-to-date weather, tide information, and AIS data that keeps you clear of other vessels. Why Choose Savvy Navvy? Clutter-Free Charts: No more messy, hard-to-read charts. Our clean, intuitive design helps you map your route with ease, making every journey more enjoyable. Smart Route Planning: Plot your course effortlessly. Savvy Navvy calculates the best route, factoring in weather, tides, and depth. Plus, you get accurate ETAs so you can plan every detail of your trip. Real-Time GPS Tracking: Keep track of your location on the water with built-in GPS, so you always know where you are—and where you're heading. Departure Scheduler: Pick the perfect departure time by considering weather, tides, and daylight. Avoid rough seas and ensure a smoother ride. AIS Data for Safety: Stay safe with real-time AIS (Automatic Identification System) data that shows nearby vessels, helping you avoid collisions. Marine Weather Forecasts: Get ahead of the weather with detailed forecasts, including wind speed, swell, and visibility. Navigate safely, no matter the conditions. Tides and Currents: Access real-time tide and current data for safer passage, integrated directly into your charts. Marina and Anchorage Info: Find marinas and anchorages with ease. Whether you need fuel, supplies, or a safe place to dock, we’ve got you covered. Who’s Savvy Navvy For? Sailors: Plan routes with tools that account for wind, tides, and depth. Powerboaters: Navigate confidently with GPS and AIS tracking, plus estimate fuel needs for any trip. Fishermen: Get precise marine weather forecasts, schedule your trips, and mark your favorite fishing spots. Jetskiers, Kayakers, and Paddleboarders: Enjoy your adventures with reliable charts and GPS tracking. Why Trust Savvy Navvy? With over 2 million downloads and multiple marine innovation awards, Savvy Navvy is trusted by boaters around the world. We use official, regularly updated hydrographic data and live weather from top sources, ensuring you’re always equipped with the most accurate information. We listen to our users, constantly improving the app based on their feedback. Each update reflects real boater needs, making sure your experience on the water gets better with every trip. Why We're Different Unlike other navigation apps, savvy navvy lets you sync routes across up to five devices, making it easy to stay connected. Try our free version and explore all features before upgrading. Download Savvy Navvy today and explore the waters with confidence! Read our terms of service here: https://www.savvy-navvy.com/terms-of-service
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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 offline functionality in navigation apps.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Frequent app crashes during GPS usage.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Complicated user interface for new users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inaccurate weather data in some areas.
Validate with people who use this workflow before building.
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.