App Overview

Boat Watch Pro icon

Boat Watch Pro

Pocket Mariner Ltd. · Navigation

Ever wanted to know more about the boats and ships you see? Boat Watch Pro lets you spot boats and ships and follow them on a real-time map wherever you are...

$7.99 · In-app purchases

PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
91 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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What's included19 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.

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.

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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Boat 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

Implement improved GPS accuracy and real-time updates.

Assumption to check: Inaccurate real-time tracking of boats

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to set custom notification preferences.

Assumption to check: Limited customization options for notifications

Validate with people who use this workflow before building.

Hypothesis 3

Offer competitive pricing and trial options.

Assumption to check: High subscription costs for premium features

Validate with people who use this workflow before building.

Hypothesis 4

Simplify UI design for better navigation and user experience.

Assumption to check: User interface can feel cluttered

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

Ever wanted to know more about the boats and ships you see? Boat Watch Pro lets you spot boats and ships and follow them on a real-time map wherever you are... If you are interested in a particular vessel, Boat Watch Pro can send you alerts when a boat you track sets sail or arrives - perfect for people with loved ones at sea, for tracking ferries and rescue vessels - or following cargo across the world! If you're in port or at the marine, point your camera at a boat and Boat Watch Pro's amazing augmented reality mode will instantly tell you what it is and where its headed! Boat Watch Pro offers... * Spot any Boat or Ship via real-time AIS * See the Name, Type, Photo, Origin, Destination and past track of vessels * Set multiple boats as favorites, and automatically find and follow one of them on map * Get alerts on your phone and watch when a selected boat arrives and departs * Search and find boats and places * Easily identify vessels with in-built Augmented Reality (AR) display * Includes Apple Watch app with arrival and departure alerts * OpenSeaMap charts showing buoys, lighthouses and shipping lanes *NOAA US Marine charts (IAP) *UK&IE Marine charts (IAP) * Share boats on Facebook, Twitter or by email Fleet Watch upgrade: * Fleet - set and receive arrival and departure alerts for multiple boats ( IAP subscription) Pocket Mariner are committed to providing great customer service and continually improve our Boat Watch apps. If you have any questions please email us via [email protected] and we'll be happy to help. Terms of Use: http://seanav.net/termsofuse.php Privacy Policy: http://seanav.net/privacy.php Support: [email protected] Subscriptions:- PortWatch (subscription):- - set a radar alarm ring around an area (0.5 to 10nm) - get notified when any ship is entering or exiting a port or area. Early alert for all ferries, cruise or cargo ships arriving at a port. - alerts when ships are passing or approaching a location. Great for folks who live by the water and want to know when a ship is approaching. You can set your gps position or the current map centre as the PortWatch location and the radar alert range from 0.5nm to 10nm. The "Fleet upgrade " subscription is yearly and will automatically renew at the end of the subscription period unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your iTunes Account at confirmation of purchase, and will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the iTunes account holder and auto-renewal may be turned off by going to Account Settings after purchase. 
No cancellation of the current subscription is allowed during active subscription period Boat Watch Pro is a Universal app, which works on iPhone, iPod and iPad. Our ship coverage is global and amongst the best in the world. You read our our ship tracking system works and can check our coverage on a map here :- http://pocketmariner.com/coverage NOT FOR NAVIGATION Boat Watch Pro should only be used for basic navigation reference and should not be solely relied upon to determine precise locations, proximity, distance, or direction.

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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
React Navigation
Axios
Zustand
React Native Maps
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.