Runwell is a PWA system, which means that you will get the same smooth view regardless of which device you are using. You can log in to the system either in your web browser or download the system to your phone:
IOS: Go to Safari, log in to www.runwell.app, press "Share" then "Add to home screen"
Android: Go to your web browser, log in to www.runwell.app, press menu (three dots), choose "Add to home screen" and name the app