The latest software can always be downloaded from iTunes. Please search for OMN within iTunes on your iPhone or iPad.
You can see which version you are running by opening up Settings on the main menu, and selecting About.
1.07 Released 22 October 2017
+ New information panel in GPX Editor (GE) - displays summary statistics such as overall distance, altitude gained and estimated time.
+ Improvements to map download and verify in My Maps window.
+ Various smaller stability fixes.