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
Ship Tracker
Explore the ocean with our new Ship Tracker app
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
1,796 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 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.
JavaScript is required to complete mailbox verification.
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 Ship Tracker: map the core Travel workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Implement enhanced location services and user feedback for accuracy.
Assumption to check: Difficulty in accurately tracking ship locations due to GPS inaccuracies.
Validate with people who use this workflow before building.
Hypothesis 2
Add advanced search filters (e.g., by type, status, or region).
Assumption to check: Limited search functionality for ships.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize notification settings and categories.
Assumption to check: Notifications can be overwhelming and lack categorization.
Validate with people who use this workflow before building.
Hypothesis 4
Enable users to customize their profiles and manage favorites more efficiently.
Assumption to check: User profiles may lack personalization options.
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
Explore the ocean with our new Ship Tracker app. Whether you're a maritime enthusiast, a professional in the industry, or simply an avid traveler, our app offers a wealth of features tailored to meet your needs. Experience the thrill of tracking vessels in real-time, accessing details about their routes, destinations, and estimated arrival times. Plan your coastal adventures and stay informed about new ships entering ports, giving you the ultimate edge in exploring new horizons. For Industry Professionals: Effortlessly manage vessel traffic, streamline port operations, and gain valuable insights into maritime activities. Our app provides you with detailed information about port statuses, vessel specifics, and current maritime conditions, empowering you to make informed decisions and efficiently handle maritime operations. Key Features: - Real-time vessel monitoring: Get live updates on vessel locations, routes, and schedules. - Expected arrivals: Plan ahead with information on anticipated vessel arrivals at ports. - Port details: Access comprehensive port information, including country, codes, and vessel counts. - Customizable fleet management: Add, remove, and track vessels according to your preferences. - User-friendly search: Seamlessly search for specific ports or vessels and explore detailed vessel information effortlessly. Benefits for All Users: Gain access to additional insights such as vessel types, callsigns, and specific vessel details, providing an all-encompassing experience for maritime exploration, leisure, or work-related needs. With a beautiful interface and intuitive design, our Ship Tracker app is your passport to the world of maritime adventure. Stay ahead of the tide, plan your voyages, and explore the high seas effortlessly. Download our app today and embark on your maritime journey with confidence! Ahoy, adventure awaits! By using our app you agree to our Terms of Services: https://sites.google.com/view/ship-tracker-terms
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
React Navigation
@react-native-maps
Zustand
Axios
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.
