App Overview

Hanalei River icon

Hanalei River

ONOSOL LLC · Weather

The Hanalei River decides a lot of days on the North Shore

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
22 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 included14 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 Hanalei River: map the core Weather 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

Expand the app to include more geographic areas and customizable locations.

Assumption to check: Limited locations for weather data

Validate with people who use this workflow before building.

Hypothesis 2

Implement push notifications for severe weather alerts.

Assumption to check: Lack of severe weather alerts

Validate with people who use this workflow before building.

Hypothesis 3

Offer more settings for user preferences, like themes and layout changes.

Assumption to check: Minimal customization options

Validate with people who use this workflow before building.

Hypothesis 4

Create widgets for quick access to weather data on the home screen.

Assumption to check: No widget support

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

The Hanalei River decides a lot of days on the North Shore. This app tells you where it stands, in one number, plus everything you need to read it. THE RIVER RIGHT NOW Open the app and the river's height sits at the top of the screen, in feet, next to what it means against the 5 ft flood stage: Normal, Elevated, Near flood stage, or Flood stage. A trend chip says whether the river is rising, falling, or holding, and by how much in the last hour. Every reading is stamped with its age, and when a gauge goes quiet or the USGS equipment fails, the app says so. An old number never gets dressed up as a live one. THE LAST FEW DAYS AT A GLANCE A stage chart plots recent gauge history, with the flood line drawn in whenever the river is anywhere near it. You see a squall's rise and fall, not just this minute's reading. LIVE ROAD CAM The Hanalei road cam, streaming live, courtesy of the Hanalei Initiative. The app finds the current stream on its own, so it keeps working when the broadcast restarts. WEATHER THAT LEADS WITH WHAT MATTERS Watches, warnings, and advisories in force for the North Shore come first, not buried in a technical narrative. Under that, the seven-period NWS forecast with temperature, wind, and chance of rain, and the full forecast discussion from NWS Honolulu when you want the reasoning behind it. Active flood alerts show up on the river screen too. TIDE AND DISCHARGE A tide curve for the day ahead with the next high or low called out, plus the river's discharge in cubic feet per second. EVERY GAUGE ON KAUAI One tab, one row per river: current level, direction, and a sparkline of recent readings. Hanalei, Wailua, Waimea, and the rest — the whole island in a few seconds of scrolling. ON YOUR WRIST The Apple Watch app keeps current height, reading time, discharge, and the next tide a glance away. NO ACCOUNT, NO ADS Nothing to sign up for. Pull to refresh, or just reopen the app and it updates itself. Full dark mode, so a 2 a.m. check doesn't light up the room. Readings come from the USGS gauge on the Hanalei River, tide predictions from NOAA, and alerts and forecasts from the National Weather Service. A gauge reading is not a road report. The app can tell you the river has reached flood stage; it cannot tell you whether water is over the road. Follow county and emergency guidance, and never drive through moving water.

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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.

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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.