App Overview

Map Area Calculator - Marea icon

Map Area Calculator - Marea

Applorium Ltd · Navigation

Marea turns any map into a precise area and distance calculator

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.5
4,689 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.

Build your own version

Build Kit

Make this idea yours

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

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included15 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

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.

JavaScript is required to complete mailbox verification.

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 Map Area Calculator - Marea: map the core Navigation workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

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 features for multi-area calculations and comparisons.

Assumption to check: Limited features for advanced calculations

Validate with people who use this workflow before building.

Hypothesis 2

Improve algorithms for better precision.

Assumption to check: Inaccurate area calculations in some cases

Validate with people who use this workflow before building.

Hypothesis 3

Implement a more guided onboarding process.

Assumption to check: User interface can be confusing

Validate with people who use this workflow before building.

Hypothesis 4

Introduce offline map access for area calculations.

Assumption to check: Lack of offline functionality

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

Marea turns any map into a precise area and distance calculator. Measure fields, plots, rooftops, lawns and lakes — anything you can see from above — in seconds. FOUR WAYS TO MEASURE - Tap to drop pins around a region and get its area instantly. - Draw a freeform shape with your finger and Marea traces the outline. - Walk the perimeter and GPS drops pins automatically as you go. - Auto-detect plots — tap to find buildings, fields and parks already on the map and turn one into a measurement in a single tap. RESULTS IN EVERY UNIT Area in square meters, square feet, acres, hectares, square kilometers and square miles — plus the distance between every point. TRACTOR MODE Turn your phone into a field-coverage guide. Set your implement width and speed, then drive: Marea records each pass, draws your covered area live, and tracks total distance and worked acreage. Pause, resume and save passes. GRID OVERLAY Drop a measured grid over any plot to plan rows, sections or spacing — horizontal, vertical or both, with the spacing, direction and color up to you. PROJECT AN AREA Pin a saved plot to the centre of the screen at its real size, then pan and rotate around it to plan, compare or align on the ground. ORGANIZE & ESTIMATE - Save your areas and revisit them anytime - Drop labeled markers on the points that matter - Keep a to-do list for every area - Add notes and attach photos - Estimate prices by multiplying any rate by the measured area SHARE ANYWHERE Send a web link to any saved area — anyone can open it in a browser to see the polygon, its size and details. You can also export a KML file or share a map image or PDF. BUILT FOR THE FIELD AND THE JOB SITE Made for farmers, agronomists, roofers, pavers, landscapers, surveyors and real-estate pros: - Estimate roofing, asphalt, paving, turf and seeding quantities - Check property lines, lot sizes and parcels - Plan plots, gardens and farmland Subscription terms: - The subscription auto-renews at the end of each term. - Payment will be charged to iTunes Account at confirmation of purchase. - The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period. - You may manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. Privacy policy and Terms of Use: https://mapareacalculator.com/privacypolicy/

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

Screenshots

< Scroll to see more >

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
react-navigation
react-native-maps
@react-native-async-storage/async-storage
TypeScript
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.