Dave Wilson
The free(basic) version does allow imports of GPX files as well as exports. The biggest limitations of basic is only a few maps are available and there is a limited number of routes that you can store. I use the split, compare and disable seasonal closures a fair amount when planning big trips and those are only available in Gold.
Here’s a comparison of the different features in each version: https://www.myrouteapp.com/en/shop/features.