Wayfindit is a browser based app for both desktop and mobile devices. It will work with Chrome, Safari and Firefox on Mac, PC, phones and tablets. There are however separate links for desktop and mobile devices: 

Desktop: app.wayfindit.com 

Mobile: app.wayfindit.com/mobile 

iOS Users: Please do not use the "Add to Home Screen" feature on you phone as it interferes with Wayfindit's functionality.