SimpleDEMViewerAS browses DEM ( Digital Elevation Model ) data as a relief map using various colors and shading. This program makes bird's eye views, stereographs, panorama views, grayscale maps, Mercator maps and other projection maps.
You can study geographic features with using above various aspect of views. 3D movie function provides you to flight or cruise in realistic landscape.
You can write memos and routes on the relief map to make youe original maps.
You should prepare DEM data and other map data separately, since no data is included in this program. To get some data, refer to the manual or online help.

What’s New

Version 2.0.1

Correct followings.
Restoration of DEM files and texture map files is failed when auto-reading at start-up, or restoration of named working set under macOS 10.14 Mojave.
Could not show Release Notes.

Provided as universal binary for Intel CPU and Apple Silicon ( M1 ).
Adapted to Big Sur UIs.
Combines Map Info Panel and Index Map with Main window.
DEM read region on the index map is changed to individual DEM region from whole rectangular region.
Double clicking on the index map reposition main window map there.
Contour lines above sea level can be set individually as same as under sea for lower land.
Can save settings of Contour lines with name, so that refer later.
Supports easier color set editing with new dedicated dialog.
Exported color set file format is changed. File extension is jzcolor. Can read jzcolr file, but older sdcolr file.
Supports easier way to specify picture size of stereograph when direction does not toward N/S/W/E.

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

Joe Wartman ,

Fantastic, powerful app for DEMs

This a wonderful, relatively easy-to-use (much easier than using GIS software) application for viewing and manipulating digital surface models of the earth. It is a jewel for Mac users studying geomorphology and earth surface processes. The associate instruction manual is comprehensive and worth reviewing before using the app. Thank you for making this freely available to the community—much appreciated.

App Privacy

The developer, Yoshiaki Katayanagi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.