Download the Android / iOS app
An Android app is available on Google Play. This is a fully native app, newly released in December 2020. Android users should find that this delivers a vastly improved user experience over using Trail Router in a web browser.
An iPhone/iPad app is available on the App Store. A new iOS app is currently in development and is expected in early 2021.
Note that the main web application at https://trailrouter.com has already been optimised to work with mobile browsers, so there is no need to install an app if you do not wish to.