App Overview

Moon Phases and Lunar Calendar icon

Moon Phases and Lunar Calendar

Kinetic Stars · Weather

Whether you want to check the current moon phase, moon age, moonrise and moonset times, or find out when the next full moon comes, our app is there for you

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.9
37,347 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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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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Combine features and design from your favorite apps.

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What's included17 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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Free quick prompt For a smaller starting point

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 Moon Phases and Lunar Calendar: 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

Simplify the interface and provide guided navigation.

Assumption to check: Users often find the information overwhelming.

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to set personalized notification preferences.

Assumption to check: Limited customization options for notifications.

Validate with people who use this workflow before building.

Hypothesis 3

Integrate reliable astronomical data sources.

Assumption to check: Some users report inaccuracies in moon phase data.

Validate with people who use this workflow before building.

Hypothesis 4

Add features for users to share phases and events with friends.

Assumption to check: Lack of community features or social sharing options.

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

Whether you want to check the current moon phase, moon age, moonrise and moonset times, or find out when the next full moon comes, our app is there for you. Watch into the future and look up the necessary information on a certain date and time and at a particular location. This most comprehensive and accurate application keeps you informed about important sun and moon times and is even perfect for both casual users and serious moon watchers. Track and read detailed moon information in your city and multiple locations all around the world. Search for a specific location by city/town name. Would you like to get notified exactly one hour before the moonrise? No problem, Moon Phases and Lunar Calendar has you covered. Receive customizable notifications that will alert you to upcoming moon and sun events you're interested in. Create alerts for your exact location and the favorite cities you select. You can also add moon and sun events to your calendar. On the main screen, you can swipe down and explore the beautiful interactive moon. Discover in what tropical, sidereal or astronomical zodiac sign the moon and the sun are. Our highly customizable widget will allow you to see all the essential information at a glance whenever you need it. Important sun information is also there. Get sunrise and sunset times for any day anywhere in the world. Find out when is the best time to take pictures outdoors: golden hour and blue hour have you covered. Is the moon rising or falling? How much time left before the moon's culmination? Whats is the actual distance to the moon right now? When is the next moon eclipse? Get all the answers in one place. Moon Phases and Lunar Calendar is an intelligent, yet easy to use application that will make tracking the moon a breeze. Terms & Conditions: http://kineticstars.com/terms.html

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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
Zustand
react-navigation
expo-notifications
@react-navigation/native
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.