You need to install GoCanvas on your phone or table to fill out the GoCanvas Apps (forms) in your account. Anyone at your company needing to fill out GoCanvas Apps will need it installed on their devices, too. You can get it via Google Play or the Apple App Store (Search "GoCanvas forms" to find it!).
You may also open the browser on your mobile device and visit http://www.gocanvas.com/m. This will redirect you to the proper place to download GoCanvas for your device.
As a note, we do have a desktop version of GoCanvas that will run on a Windows Desktop computer that is running Windows 8 or higher. GoCanvas is not supported on Windows Phones or Blackberry devices.