App Overview

i-Boating: Canada & USA - Marine / Nautical Navigation Charts for fishing & sailing icon

i-Boating: Canada & USA - Marine / Nautical Navigation Charts for fishing & sailing

Bist LLC · Navigation

This App offers access to CHS marine vector & raster charts

$32.99 · In-app purchases

PRICE
$32.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.7
12 ratings · Top 50%

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 included18 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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> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for i-Boating: Canada & USA - Marine / Nautical Navigation Charts for fishing & sail: 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 comprehensive offline maps and routes.

Assumption to check: Limited offline features, making it hard to use without data.

Validate with people who use this workflow before building.

Hypothesis 2

Focus on a cleaner, more minimal design.

Assumption to check: User interface can be cluttered, leading to confusion.

Validate with people who use this workflow before building.

Hypothesis 3

Simplify the purchasing flow and enhance communication about subscriptions.

Assumption to check: In-app purchase process can be confusing and frustrating.

Validate with people who use this workflow before building.

Hypothesis 4

Optimize the app's performance for low-bandwidth scenarios.

Assumption to check: Performance can lag in areas with poor connectivity.

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

This App offers access to CHS marine vector & raster charts. First marine GPS app to have route assistance with Voice Prompts for marine navigation. You can create new boating routes or import existing GPX/KML routes. It supports Nautical Charts course up orientation. Includes Tide & Currents prediction. (Includes coverage for Trent Severn Waterway incl. lake Simcoe etc.) ►FEATURES √ Beautiful and detailed Hardware/GPU accelerated vector charts (text stays upright on rotation) √ Long press to query the details of Marine object (Buoy, Lights, Obstruction etc). √ Customizable depth(Ft/Fathom/Meter) and distance units (km/mi/NM) √ Customizable Shallow Depth. √ Record tracks, Autofollow with real-time track overlay & predicted path vector. √ Voice Prompts for marine navigation (requires GPS ) √ 1ft / 3ft depth contour maps for anglers for selected lake maps. √ Supports GPX/KML for boating route editing/import. √ Tide & Currents prediction. √ Seamless chart quilting of marine charts √ Enter or import Waypoints. ► MAPS The maps include coverage of Pacific Coast, Central Canada(incl. Great Lakes, Trent Severn Waterway, Ontario Lakes), Atlantic coast derived from CHS data. ►ROUTE MANAGEMENT / TRIP PLANNING √ Create New Route/Edit Existing Routes √ Move Points √ Add points to an existing route leg √ Delete / Rename points √ Import GPX, KML & KMZ files √ Plot/Edit Routes √ Enter Waypoints √ Share/Export Routes, Tracks & Markers √ Reverse Routes ►GPS FEATURES √ Auto Follow * Real Time Track Overlay * Predicted Path Vector * Course Up (Text stays upright) * Speed & Heading √ Route Assistance With Voice Prompts * Prompts when approaching a boating route marker * Continous distance and ETA updates * Alerts when sailing/boating off route * Alerts when boating in wrong direction √ Record Tracks ►TIDE & CURRENTS * For US, Canada, UK, Germany & New Zealand * High/Low Tides * Tidal Current Prediction * Active Current Stations ►Instrumentation √ Marine AIS & (NMEA AIS and GPS over TCP/UDP) √ Wind direction & Speed,Sonar depth,Water temperature ► SHARING * Share tracks/routes/markers on Facebook & Twitter * Export tracks/routes/markers as compressed GPX files. Sample Nautical Charts ►Rainy Lake and Lake of the Woods ►Quebec to Anticosti Island West ►Gulf of St. Lawrence South ►Ontario Lakes ►Trent-Severn Waterway ►Labrador Coast ►Lac Saint Jean ►Rideau Canal - Ottawa River ►Georgian Bay ►Newfoundland East and South ►Great lakes Canada and St. Lawrence river ►Lakes and Rivers in Manitoba and Saskatchewan ►Lakes and Rivers of British Columbia ►Pacific Coast - Vancouver Island East & West - Haida Gwaii ►Lakes around Georgian Bay ►Gulf of St. Lawrence North - Newfoundland West ►Alberta Lakes ►Nova Scotia South - Bay of Fundy Vancouver Island Ile de Vancouver, Juan de Fuca Strait Queen Charlotte Sound Strait of Georgia, Southern Portion Partie Sud Lake Ontario Lac Ontario LAKE SIMCOE Strait of Georgia, Central Portion Partie Centrale BIG CHUTE MARINE RAILWAYS BER ROULANT Strait of Georgia, Northern Portion Partie Nord Georgian Bay Baie Georgienne Strait of Georgia, Central Portion Partie Centrale North Pender Island to a Thetis Island Thetis Island to a Nanaimo Juan de Fuca Strait to a Strait of Georgia Howe Sound Active Pass Nanaimo Harbour and et Departure Bay LAKE ROSSEAU AND/ET LAKE JOSEPH Haro Strait, Boundary Pass and et Satellite Channel Approaches to Approches a Vancouver Harbour Vancouver Harbour, Western Portion Partie Ouest Telegraph Harbour and et Preedy Harbour Ganges Harbour and et Long Harbour Dodd Narrows to a Flat Top Islands Baynes Sound Approaches to Approches a Sidney Desolation Sound and et Sutil Channel Porlier Pass Fraser River Fleuve Fraser, Strait of Georgia Mitchell Island Fraser River Battery Disclaimer: Continued use of GPS running in the background can dramatically decrease battery life.

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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

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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.

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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.