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
Ocean Navigator Watch Pro
Ocean Navigator Watch Pro – The Ultimate Navigation Tool for Your Apple Watch
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.0
1 ratings · Below Average
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 included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Ocean Navigator Watch Pro: 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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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
Include offline maps and route saving.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time traffic and weather updates.
Assumption to check: Navigation accuracy issues
Validate with people who use this workflow before building.
Hypothesis 3
Design a more intuitive and modern UI.
Assumption to check: User interface is not user-friendly
Validate with people who use this workflow before building.
Hypothesis 4
Add voice navigation with TTS for driving directions.
Assumption to check: Lack of advanced features like voice navigation
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
Ocean Navigator Watch Pro – The Ultimate Navigation Tool for Your Apple Watch Navigate Smarter. Stay Safer. Track Everything. Transform your Apple Watch into a powerful marine navigation tool with Ocean Navigator Watch Pro. Designed for boaters, sailors, and water adventurers, this app delivers real-time GPS tracking, speed monitoring, compass navigation, and Man Overboard (MOB) functionality, all optimized for your wrist. Whether you’re exploring new waters, tracking your heading, or ensuring safety at sea, Ocean Navigator Watch Pro keeps you informed and in control. Key Features: - Real-Time GPS Tracking – Stay on course with live location updates - Man Overboard (MOB) System – Quickly mark and track MOB locations - Smart Compass & Heading Display – True & magnetic heading support - Speed & Distance Metrics – Track in knots, km/h, or m/s - Time-to-Go (TTG) Calculations – Estimate arrival times based on speed - Customizable Dashboard – Swipeable, reorderable info panels - Battery-Saving GPS Modes – Choose from Normal, Saver & Ultra Low for efficiency - Night Mode Support – Navigate easily in low-light conditions Stay Safe with MOB Tracking Emergencies happen fast—Ocean Navigator Watch Pro helps you act instantly. With a single tap, mark a Man Overboard (MOB) position and track real-time distance and bearing to the MOB location. Stay aware, stay safe. Smarter Navigation with Adaptive Features • Heading Tracking – Follow your course with a rotating compass • Live Speed Monitoring – Track movement in knots, km/h, or m/s • Automatic Data Persistence – Settings and MOB positions restore on app restart Built for Performance & Efficiency With watchOS-optimized design, Ocean Navigator Watch Pro delivers smooth, real-time navigation while conserving battery life. Whether you’re in open water or coastal cruising, this app adapts to your needs. Try It Free – Simple, One-Time Purchase • Enjoy a 7-day free trial with full access • Unlock the full version with a one-time purchase • No subscriptions, no hidden fees – just professional navigation on your wrist Download Now & Navigate with Confidence! Get Ocean Navigator Watch Pro today and experience precision navigation at your fingertips!
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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 Native
Expo
Zustand
react-navigation
react-native-maps
expo-location
BUILD KIT DIFFICULTY
Intermediate
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.
