Router 1.11.7 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. Router for Mac relates to Lifestyle Tools. This free Mac app was originally developed by READMEANSRUN.
From the developer:
Router makes viewing and editing .GPX, .TCX, .KML, .FIT, and Pioneer .DB route files on your Mac a snap. The application features full-size content view and comes with an improved inspector layout. It provides convenient lap selection in the touch bar for routes with a plethora of laps.
You may want to check out more software for Mac, such as Code de la Route à la Carte, BitWise Routing Server or Route 66, which might be related to Router.