Reading the documentation (http://docs.nextgis.com/docs_ngmobile/source/share.html ) it states "You can save the file on a memory card." but I see no such option. In fact I also only see 4 options for "share". I see "Wi-Fi Direct", "Bluetooth", "Gmail" and "Messaging". Unlike any other android app when I hit share I have many other options including the default messaging app I have installed which is NOT "Messaging", Hangouts, etc.
Share menu items depend on installed in your Android phone applications. You need some application (i.e. ez explorer) which add this item to share menu.
Reading the documentation (http://docs.nextgis.com/docs_ngmobile/source/share.html ) it states "You can save the file on a memory card." but I see no such option. In fact I also only see 4 options for "share". I see "Wi-Fi Direct", "Bluetooth", "Gmail" and "Messaging". Unlike any other android app when I hit share I have many other options including the default messaging app I have installed which is NOT "Messaging", Hangouts, etc.