GMDE Lite

v. 8.2.0 -- 2 October 2026 • NEW: Options button at the bottom of the Map Scree replaces the automatically appearing message boxes when you tap on a Contact, POI, or orientation. Now, the object will appear selected and the options button will appear but you can continue manipulating the screen as you want. When you tap on the Options button, a context appropriate menu will appear allowing you to select all of the same options (and more) that the message box previously allowed you to select. This will make screen interactions much more fluid, especially on screens with a large number of objects on them. NEW: Straight line topo profiles drawn with the measure distance tool now display contact intersections and apparent dip symbols!. New new ellipsis (...) button at the bottom of the screen allows you to toggle on or off individual features as well as modifying the swath width for projecting orientations. To calculate the appropriate projection azimuth, the app will calculate a cylindrical best fit to the orientations in the map area; hide the orientations that you do not wish to include in this calculation before proceeding with drawing the topo profile. At the present time, only straight line topo profiles can display this geological information. NEW: A new switch in Settings allows you to disable autocorrect and spell checking in text entry boxes in Contact, POI, and Orientation details screens. Dictation can still be used with this turned off. IMPROVED: In previous versions, when setting a new POI using the device GPS, the app would continue to improve the POI's location right up until you save the POI by closing the POI details screen. This could cause problems if you never closed the screen and walked (or drove) away to the next site while the POI details screen was still open, because the latest location would be saved when the screen was eventually closed. Now, the app will stop collecting GPS location info for a specific POI which the device reported accuracy drops below 10 m. Note, however, that your POI is not saved until you close the details screen (the same is true for orientations and contacts)!! So, always close your details screen for a new POI as soon as you have finished entering data so that it can be recorded in the database. FIXED: New bugs fixed, others probably inadvertently introduced... v. 8.0.0 -- 6 August 2026 (Finally... Download maps for offline use) • NEW -- GMDE can now download (when you have an internet connection) and cache permanently on your device map tiles from the USGS and from the Open Topo Map project. The app will automatically store the tiles in an MBTiles database. USGS Topo and Imagery map tiles are only available in the United States but Open Topo Map tiles (with 10 m contours based on the 30 m SRTM DEM) can be downloaded for anywhere in the world. To download map tiles go to the Settings Screen and toggle on "Download Map Tiles". A message box will appear asking you the source you want to use for map tiles. When you tap the source, you will be taken to the Map or the Online Satellite screen. Adjust the view by pinching and dragging until the area for which you want to download tiles fills the screen. I suggest zooming out no more than level 12 to avoid downloading a huge number of tiles all at once (please do not abuse these free sources of map tiles!). Then, tap the name of the data source in the Map Button menu (e.g., for USGS Topo Map tiles tap "USGS Topo Cache") and your download will start automatically. All zoom levels between your starting zoom level (e.g., 12) and zoom level 16 (2 m/pixel, the highest zoom for which USGS tiles are available) will be downloaded to your device. You can pan the map once tiles have been downloaded to start new downloads of adjacent areas...