I love the Locus Pro and want to adopt it as default app for my tracks.
However, lack a very useful feature: synchronization of routes and tracks in an online service.
I know that Locus can send the tracks to the GPSI, but only send, not download.
Currently I have used another app to my tracks, the ViewRanger. In it I have a site (my.viewranger.com) where I do the management of routes and tracks and then sync to my Android. Moreover, I can see the tracks, edit and share them. But only the option to sync it would be very useful in Locus.
That is, the locus is a better app that ViewRanger, but could have the option to synchronize.
Why don't you use an external app to sync? Asus Webstorage would be a start...
If it is to use a third-party software, which is made a full integration with the GPSies and can both send and download routes.
Since the app itself will not have a specific function for synchronization, it could fetch automatically routes that a third-party program synchronized in a particular folder on the SD card.