You can use Android Device Monitor to pull it.
Go to Tools -> Android -> Android Device Monitor
- Select your device from the left list.
 
- Select FileExplorer tab
 
- Expand data-> data -> "yourpackageName" -> databases
 
- Select your databaseFile and on the top right click on this icon
pull a file form a device. 
- Save it on your desk then use this tool to open it:
http://sqlitebrowser.org/