GeoNames Map Explorer iOS App

GeoNames Map Explorer iOS App is an app designed for maintaining your situational awareness and getting around in a new unfamiliar location or in a foreign Country.

It uses NGA’s Foreign GeoNames & USGS Domestic GeoNames databases (POI Points of Interest) set up in a highly optimized fashion for display on the map and searching. The app supports Audio Playback Pronunciations of this data.

The app works immediately after install with internet access and works offline by downloading an area of interest first.

The map, search, and audio playback work with data on Tech Maven Geospatial’s server.

The Data is broken down into nine categories (Feature Classes)

Administrative region
Populated place
Locality or area
Streets, highways, roads, or railroad

The app was originally designed and sold exclusively to US Government personnel via the NGA GEOINT app Store (IGAPP) and now is publically available.

We are building custom white-labeled versions of this app as well as selling the source code. Contact us to learn more.

Our Service Advanced Spatial Service

Searching by Filtering Feature Class and Feature Designated Code


Users can view offline mapping data in the following formats

GeoJSON and MBTILES and GPKG raster tiles 3857

a vector data converter exists to convert other formats



  • Coordinate Display (Lat Long, MGRS, GARS)
  • Scale Bar
  • Measure Area and Linear Tools
  • GeoLocation with settings for tracking your location.
  • Spatial bookmarks/placemarks
  •  The map has optional vector tile overlays that can toggled on
  • MGRS Grid, GARS GRID, TimeZones, International Boundaries
  • The map supports searching MapBox and OSM


 The app works equally well either Online connected to internet mapping services and API’s and Tile Servers or in a D-DIL Environment with offline mapping data and database


GeoNames data is displayed by Feature Class and users can decide what feature classes to show. The GeoNames Display field is used to control the scaling/zoom levels of the data.

Advanced GeoNames Search and Spatial Search (constrain your queries to a certain geographic area)

User Loaded Data

Mbtiles Vector Tiles

Users can upload mbtiles vector tiles using the device data option, and can style fill color , and change fill opacity and labels respectively. Currently we are not supporting multiple layers vector tiles, And data must be gzipped/gzf PBF inside tile_data blob.


OSM-Overpass API

Users can search in an area of POI (Points of Interest) and amenities within a geographic area they specify. First pick the top level category and then the sub category/type (example: Ammenity Bank or ATM)

GeoJSON and GPKG vector features

Users can load vector gpkg on map and can change style and labels of respective vector layers .And they can also see geojson properties in tabular form

Attribute Grid with Search

Users can zoom specific layer and can see attributes in tabular form

File Manager – Cloud Integration

You can import files (Documents & images) from your directory & clouds(DropBox,Box.Net).

Wifi Share

Share Files with devices on the same Wifi network and even allow uploading of files to the iphone/ipad.

View Office Docs (Word/PowerPoint/Excel/PDF)  and Image/Photos

App supports file viewer. Users can easily view and sort out all your Office documents (word, powerpoint, excel),including PDFs and images using File Manager.

Downloading Area of Interest offline Data

Required data is automatically downloaded & Optional Data can be Selected and downloaded.

Required data is automatically downloaded & Optional Data can be Selected and downloaded.

Coordinate Converter

Geo Collection Setting

3d- Buildings

Gars -Coord

Place_ Marker

OSM OverPass API search in an area of Points of Interest and Amenities

Satellite Imagery Basemap

Satellite Imagery Basemap in OSM Styles

Go to Coordinates - GARS

Go to Coordinates- GARS Grid Cell

OSM OverPass API

search in an area of Points of Interest and Amenities