Comparison

Topography vs Offline Map Data Generator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Topography

This tool helps civil engineers, architects, and surveyors measure surface areas and convert coordinates. It allows users to calculate polygon areas, convert coordinates to UTM EGSA87 Datum, and export measurements in DXF, KML, or TXT formats via email.

Highlights
  • Convert coordinates to UTM EGSA87 Datum
  • Calculate polygon area in square meters
  • Export measurements in DXF format
  • Export measurements in KML format
  • Export measurements in TXT format
  • Input coordinates manually
Features
Read full description

The application is very useful to Civil Engineers, Architects, Surveyors, and those interested in measuring a surface area or converting its coordinates to UTM EGSA87. This tool enables users to: 1. Convert the coordinates (x,y) to UTM EGSA87 Datum 2. Calculate the area of a polygon in square meters (m2) 3. Send the above measurements by e-mail in [dxf] file format. The dxf file can be opened in a MAC or a PC by any drawing application like Autocad. 4. Send measurements by e-mail in [kml] file format. The kml file can be opened in a MAC or a PC or iPhone by GoogleEarth application. 5. Send measurements by e-mail in [TXT] file format. The text file contains coordinates either in EGSA87 Datum or Latitude and Longitude in decimal degrees or UTM coordinates. The measurements mentioned above can be provided not only by placing the iPhone in each border of a surface area, but also from distance (when users are on their bed or their sofa). Users may also have their final measurements by entering the coordinates either in EGSA87 Datum or Latitude and Longitude in decimal degrees.

About

Offline Map Data Generator

Features
Read full description

Discover the Ultimate Mapping Experience with Tech Maven Geospatial Unleash the power of geospatial data with Tech Maven Geospatial, your all-in-one mapping solution available now on iOS! Whether you're a seasoned explorer, a professional in the field, or an enthusiast, our app provides unparalleled features to elevate your mapping endeavors. Key Features: 1. Seamless Data Access: Download online mapping URLs, including dynamic and cached mapping services and tile layers. Access ESRI MapServer, FeatureServer, ImageServer, VectorTileServer, PBF/MVT XYZ Vector Tile URLs, OGC API Tiles/XYZ/TMS, and more. Future versions will include downloading capabilities from other providers (OGC WFS/OGC API Features, OGC WMS/OGC API Maps, OGC WMTS). 2. Pre-configured Tile Layers and Conversion Tools: Support for pre-configured tile layers and the ability for ATAK/WINTAK users to import tile.xml configurations. In-app Vector Data Converter: Convert GIS Vector Data to optimized formats like MBTILES Vector Tiles, GPKG Vector Features, GeoJSON, or KML. Compatible with various file formats including ESRI FileGDB, Shapefile, MapInfo, GPX, CSV, and more. 3. Live Event Driven Data Feeds: Stay updated with live data feeds from ESRI FeatureServer, Network Link KML, and GeoRSS Feeds. Download data at specified frequencies and convert to GeoJSON (convertible to KML in-app for ATAK or iTAK). 4. Data Visualization and Sharing: Visualize downloaded data and user-loaded data in the Map Viewer. Supports GeoJSON, raster tiles from MBTILES and GPKG, and vector tiles from MBTILES. 5. Access Tech Maven Geospatial’s Data APIs: Explore our optional purchases to access Tech Maven Geospatial’s data APIs, offering pre-staged data, AOI (Area of Interest/Operation) APIs, Digital Elevation Model Downloaders, and more. Please note: Users are responsible for the terms of use/service and access to the data they download from the provided URLs. For detailed terms and conditions, please refer to our End User License Agreement (EULA): https://offlinedatadownloader.techmaven.net/eula/ Download Tech Maven Geospatial today and embark on your mapping journey with confidence and precision!

Screenshots

Topography4 screens
Offline Map Data Generator4 screens

Verdict

The call

The clearest difference is price: Offline Map Data Generator at Free against Topography's $3.99. Offline Map Data Generator also leads on iOS requirement (14.0 vs 16.1). Topography's advantage is in-app purchases (none vs 6) and update cadence (every 2 months vs every 7 months). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Offline Map Data Generator is free to download; Topography costs $3.99 up front. Offline Map Data Generator sells 6 in-app purchases, starting at $19.99 per year. Topography asks for nothing beyond the download.

UpkeepUpdate frequency

Topography ships an update every 2 months, Offline Map Data Generator every 7 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Topography versus Offline Map Data Generator: the parameters behind the verdict, then further details
ParameterTopographyOffline Map Data Generator
Price$3.99Free — better
Rating2.3 (3 ratings) — better—
Positive reviews58.6% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 months — betterEvery 7 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.114.0 — better
Further details — not scored
Size2 MB187 MB
Age rating4+17+
DeveloperGeorgios GraikousisTech Maven GeoSpatial LLC

In-app purchases

None

Topography

No in-app purchases

6 purchases

Offline Map Data Generator

Subscriptions6
  • App Subscription7 Days trial$19.991 Year
  • OMDG Elevate API7 Days trial$24.991 Year
  • OMDG Vector Conversion API7 Days trial$24.991 Year
Show 3 more
  • OMDG DEM Downloader$24.997 Days
  • Geo Request AOI$49.997 Days
  • Offline Map Data Generator7 Days trial$999.991 Year

Questions

Is Topography free?
Topography costs $3.99, with no in-app purchases.
Is Offline Map Data Generator free?
Offline Map Data Generator is free to download, with in-app purchases available.
Do Topography or Offline Map Data Generator have ads?
Neither Topography nor Offline Map Data Generator shows ads.
Which is updated more often, Topography or Offline Map Data Generator?
Topography ships an update every 2 months, and Offline Map Data Generator every 7 months. Most recently, Topography was updated on November 6, 2026 and Offline Map Data Generator on November 3, 2026.

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