App Overview

Flat Earth Pro icon

Flat Earth Pro

Othman Alzahrani · Education

Flat Earth app is a tool used to visualise daylight coverage, sun and moon overhead positions, rise and set times, moon phases, lunar parallactic angle and liberations, and much more in a simple and easy to read Azimu...

$3.99 · In-app purchases

PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
112 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 Flat Earth Pro: map the core Education 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

Add more interactive elements like forums or live discussions.

Assumption to check: Limited interactive content compared to other education apps.

Validate with people who use this workflow before building.

Hypothesis 2

Introduce a freemium model with limited free content.

Assumption to check: High price point for some users.

Validate with people who use this workflow before building.

Hypothesis 3

Incorporate badges, leaderboards, and rewards.

Assumption to check: Not enough gamification features.

Validate with people who use this workflow before building.

Hypothesis 4

Implement user forums or discussion boards.

Assumption to check: Lack of community engagement 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

Flat Earth app is a tool used to visualise daylight coverage, sun and moon overhead positions, rise and set times, moon phases, lunar parallactic angle and liberations, and much more in a simple and easy to read Azimuthal projection of the earth. Once you start the application, you will be informed immediately about the current zenith (overhead) position of the sun and moon, the current phase and parallactic angle of the moon, day and night map and much more relative to any observer position on earth. With one touch you can rotate clockwise or counter-clockwise to move time to the future or to the past and visualise the orbital motion of Sun, Moon, and 5 more optional celestial bodies realtime and with great accuracy. All of the core features of the app work offline including time zones. The graphical positions of the celestial bodies on the map represent the zenith (overhead) position relative to the app time. The direction of the celestial body (azimuth) in your local sky and its altitude can be visualised as well as the sky dome relative to any location through the navigation tab. The Flat Earth Application includes: - Lunar Perigee and Apogee in realtime as well as event schedule. - Lunar Phases in realtime as well as event schedule. - Local and regular Compass, and directions for the current sky position for all of the available celestial bodies. - Altitude , azimuth and current zenith position are featured and easily accessible for every feature celestial body. - Day light coverage visualisation over the earth for any particular time instant. - The rise and set times for any location on earth for all the of the available celestial bodies. - All time zones. - Moon libration and Orientation at any date and time and at any location. - Unique local weather forecast integrated within the app in app time controller. - Unlimited Moon, Sun and Earth Data at ANY date and time. - The ability to take and share a high resolution shot of the earth a moon. - Custom Notification at any date and time.

Written user reviews are not shown here. Check current App Store reviews >

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
Supabase
@react-navigation/native
react-native-video
react-native-paper
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.