# iTopography - Area Calculator — The area calculator you need

> Polygon area and perimeter calculator with GPS coordinate mapping and DXF import/export. (iPhone/iPad app by i-SmartSolutions.)

- Source: https://appshunter.io/ios/app/itopography-area-calculator/id391390895 (this page in markdown: same URL + `.md`)
- Developer: [i-SmartSolutions](https://appshunter.io/developer/391390898)
- Category: Utilities, Productivity
- Price: Free with in-app purchases (on sale, was $3.99)
- Age rating: 4+
- Requires: iOS 12.0 · 10 MB
- Languages: American English
- Released: 2010-09-17
- Data updated: 2026-09-03
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/itopography-area-calculator/id391390895/reviews.md

## What is iTopography?

Key Features:

- Computes the angles of any up to 5 vertices polygon

- Obtain coordinates (longitude, latitude) from the Google Map

- Create an infinite number of projects

- Import simple DXF files

- Email the data (longitude, latitude and altitude, and the coordinates of the points)

- Export the coordinates in a DXF file and then email it

- Zoom in/out on the map

- Rotate the map (360 degrees)

- Manually add points by giving the Longitude/Latitude of the    point

- Compute the area of any sub-region on the fly
--------------------------------------------------

Calculating the area of a surface has never been easier!

Whether you are a civil engineer, a topographer, a student or a person who likes to build things on his/her own, you will find iTopography an invaluable tool. 

iTopography is developed on the premise that a surface can be approximated as a polygon of finite number of lines and vertices (points). Therefore, iTopography can calculate the area of any surface, whether this surface is a garden, the living room, a field or even a geometrical shape for a homework class.

iTopography uses the GPS device to obtain the longitude and latitude of the current position.  In the case of a weak signal (e.g., inside the house), the user is asked to give the distance and angle between two adjacent points. 

In order for iTopography to compute the area of a surface, the user must move along the borders of the surface in a clockwise or counter-clockwise direction. When the user inserts a point, iTopography will connect the adjacent points with a straight line, draw the surface, and calculate the area of the surface along with its perimeter.

## Key features

- Polygon area and perimeter calculation
- GPS coordinate acquisition (longitude, latitude)
- DXF file import and export
- Project creation and management
- Map zoom, pan, and rotation
- Manual point addition
- On-the-fly sub-region area calculation

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Arrange points on the map | $0.99 | one-time |
| iTopography Height | $0.99 | one-time |


## Recent user reviews (10 of 26)

All indexed reviews: https://appshunter.io/ios/app/itopography-area-calculator/id391390895/reviews.md

### 2/5 — Didn't have needed functionality

*2017-03-04, version 2.5*

I was trying to measure the area of an irregular polygon where I knew the lengths of the sides. Ideally, I wanted to draw this on a map and measure. It doesn't do that. You can drop pins where you think they belong, but you can't make precise measurements. Apparently Apple won't refund your money unless you spend hours hunting down the developer and getting it in writing the functionality you need doesn't exist. So if this is the functionality you need bypass the expense.

### 1/5 — Not functional

*2013-05-05, version 2.3*

I purchased this app because it claimed I could manually enter points on a map to find the area. Doesn't work! Even when trying to use it to physically go to each point, no map is displayed. Don't bother with this unless major changes are made.

### 1/5 — Waste of £2

*2013-04-24*

Doesn't work out the area in acres or hectares useless unless you want to measure distances....... Only accurate up to 5m

### 1/5 — Horrível

*2013-01-31, version 2.3*

As mensagens ficam pipocando na tela, vc nao consegue usar os mapas por satélite.

### 5/5 — Misuro

*2013-01-25, version 2.3*

App di altissimo livello..anche il team di progettisti disponibili ed attenti ai particolari.. Complimenti ottimo lavoro..consigliatissima!

Ps ne ho provate tante ma questa é la migliore..

### 1/5 — UTM

*2012-08-17, version 2.2*

Não encontro como configurar para coordenadas UTM e o levantamento usa coordenadas geograficas erradamente, o mapas sai espelhado, acredito que pelo fato das coordenadas geograficas serem negativas no hesmisferio sul e na longitude oeste. também o calculo de área esta incorreto.

### 1/5 — Don't bother

*2011-11-16, version 1.8*

Very inaccurate with the GPS method, a compass and pacing will produce more accurate results.  Actually found that grabbing corner coordinates off another GPS app and calculating the area of the polygon myself also produced betterresults.  But hey, if +/- 50% is close enough...

### 1/5 — Area

*2011-11-02, version 1.8*

O calculo da area e totalmente erroneau

### 1/5 — THIS APP DOES NOT WORK

*2011-10-18, version 1.8*

Mirror image wrong size field. A good idea. .

### 1/5 — Τζάμπα αλλά...

*2011-06-19, version 1.8*

Είναι δωρεάν αλλά είναι τραγικό.

## Frequently asked questions about iTopography

### How does iTopography calculate area?

iTopography approximates any surface as a polygon. You trace the borders of the surface, and the app calculates the area and perimeter based on the connected points.

### Can I import existing map data into iTopography?

Yes, iTopography supports importing simple DXF files, allowing you to work with pre-existing design or survey data.

### What kind of data can I export from iTopography?

You can export coordinates (longitude, latitude, altitude) and the coordinates of the points in a DXF file, which can then be emailed.

### Does iTopography require a strong GPS signal to work?

While it uses GPS for coordinates, if the signal is weak, you can manually input the distance and angle between points to continue calculations.

### What devices is iTopography compatible with?

iTopography is available for iPhone and iPad devices, as indicated by its support for 'iphone' and 'ipad'.

### How often is iTopography updated?

The app was last updated on February 24, 2025, indicating recent development and maintenance by the developer, i-SmartSolutions.

### What is the age rating for iTopography?

iTopography has an age rating of 4+, making it suitable for a wide range of users, including younger individuals interested in measurement.

### Does iTopography have ads?

No, iTopography does not contain advertisements, as indicated by the 'hasAds' flag being false.

## Version history (last 5 releases)

### 4.4 — 2025-02-24

- Correctly compute the area of a surface using longitude and latitude
- Bug fixes

### 4.3.6 — 2024-09-06

- If the Longitude / Latitude of a point is known, Long press on a point to get directions from your current location to that point
- UI changes

### 4.3.5 — 2021-06-25

Fixes a bug in the code that imports DXF files
Several minor changes in the UI (both iPhone and iPad)

### 4.3.4 — 2021-01-26

Fixes a UI issue in the info screen
Fixes a bug that could cause the app to crash when you try to  purchase one of the two extra features

### 4.3.3 — 2020-09-21

- Clone a Project
- Rename a Project
- Compute the height: The distance between a point and the opposite side

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All apps by i-SmartSolutions: https://appshunter.io/developer/391390898

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*