App Overview

U.S. Lighthouse Guide icon

U.S. Lighthouse Guide

lighthousefriends.com LLC · Travel

U.S

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
7 ratings · Top 5%

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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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/
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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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Quick prompt

> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for U.S. Lighthouse Guide: map the core Travel workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

U.S. Lighthouse Guide is your offline companion to more than 800 lighthouses across the United States. Explore the coasts and the Great Lakes, dig into the history and details of each light, and keep a journal of the ones you've visited and the ones you still want to see. Then look back on each year's lighthouses, told as a story. EXPLORE THE COAST • Browse lighthouses state by state, each with photos and rich descriptions • Detailed records: location, history, characteristics, and visitor info • See where each lighthouse stands on the map • Filter the map by state, or by the details you care about FIND LIGHTHOUSES NEAR YOU • See which ones are closest to you and how far away each is • Choose how far to look — widen or narrow the search radius any time • Recenter the map on where you are with one tap KEEP YOUR JOURNAL • Log visits, favorites, and passport stamps • Add your own notes and visit dates • Keep a To Visit list of the lights you still want to see • Your Lighthouse Year: each year's visits told as a story, month by month, ready to share as an image or PDF • Follow your USLHS Passport: your achievement level, your patch, and how many entries reach the next level • Export your journal as a PDF or CSV, and import from a CSV • Watch your progress grow state by state • Syncs automatically across your iPhone and iPad via iCloud — no sign-in required • Share your journal with friends or family and collaborate on it LISTEN, HANDS-FREE • Tap the speaker icon on any lighthouse page to have its history read aloud — pick your voice and speed in Settings • Podcast-style mini-player: pause, resume, or skip back and ahead a sentence at a time • Keeps reading while you browse other tabs or with your screen locked BUILT FOR THE ROAD • Works offline — lighthouse data, history, and main photos are bundled in the app (live maps and full photo galleries need a connection) • Directions open in the navigation app you prefer — Apple Maps, Google Maps or Waze • No account, no sign-up, no ads, no tracking Whether you're a lifelong "lighthouse bagger," chasing passport stamps, or just planning a coastal road trip, U.S. Lighthouse Guide helps you discover, find, and remember the beacons along the way. Privacy policy: https://lighthousefriends.com/privacy-policy.html

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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

Add in-app messaging or community boards for user interaction.

Assumption to check: Limited user engagement due to lack of community features.

Validate with people who use this workflow before building.

Hypothesis 2

Implement advanced filtering options for better searchability.

Assumption to check: Difficulty in finding lighthouses without a search filter.

Validate with people who use this workflow before building.

Hypothesis 3

Introduce a premium feature for offline maps and details.

Assumption to check: Lack of offline access to lighthouse information.

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to log visits and track their lighthouse adventures.

Assumption to check: No personalized tracking of visits.

Validate with people who use this workflow before building.

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
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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.