App Overview

Sunset and Sunrise Times icon

Sunset and Sunrise Times

Fascinating Projects · Weather

Live by the Sun! See not only the Sunrise and Sunset times but also the First and Last Light times for exactly where YOU are right now – not the "closest" city

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.9
2,679 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 included16 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 Sunset and Sunrise Times: 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

Enhance location database and allow user submissions for missing data.

Assumption to check: Limited location data for some areas

Validate with people who use this workflow before building.

Hypothesis 2

Implement push notifications for reminders.

Assumption to check: No notifications for sunset/sunrise

Validate with people who use this workflow before building.

Hypothesis 3

Add themes and customization for display settings.

Assumption to check: Lack of customization options

Validate with people who use this workflow before building.

Hypothesis 4

Simplify the subscription model and provide clearer guidance.

Assumption to check: In-app purchases can be confusing

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

Live by the Sun! See not only the Sunrise and Sunset times but also the First and Last Light times for exactly where YOU are right now – not the "closest" city. See exactly how much daylight is left in the day - in a large, simple, easy to read display - so you can plan ahead to the last speck of daylight. Both iPhone and iPad support is included in the price. This IS the app you are looking for! It shows: • Sunrise time • Sunset time • First Light time (Dawn) • Last Light time (Twilight end) • Amount of daylight in the day • Counts down the amount of daylight left in the day until last light • At night, counts down the time left until the first light of the new day • Counts down days, hours and minutes left until the shortest and longest days • Dates of the equinox and solstice • See the Sunrise, Sunset, First and Last light times for any day in the future. • Correctly handles Daylight Savings time. • Access to your location by the app is completely optional. • Resizable text using iOS's Dynamic text accessibility feature. • VoiceOver and Voice Control compatible. *** What our reviewers said: "I use it least 3 or 4 times a week and it's nice and accurate. Invaluable for any time-pressed gardener!" "Handy tool for planning when to fish." "...Now I can time my walks to finish the walk well before sundown... Highly recommend " "Simple but effective app. As a photographer I use it all the time." "Thank you for this app - I love it!" Don't believe us? Look at our reviews in the app store! An indispensable tool for those who don't want to waste a moment of the day - or the night! • We wrote this app for ourselves, but love sharing it and getting your positive feedback - thank you for your great ratings and reviews :)

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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
Starter

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.