The Itefy Web App is the main app for managing equipment. Although most of it also can be used with smartphones, it is mainly designed for larger screens, as on tablets, laptops, and desktop computers.
It is web-based so you don't have to download any software to use it. Just use a modern web browser on any Windows, Mac, Linux, or Chromebook machine - or even an Android tablet or iPad. All you really need is an active internet connection, and you're good to go!
Just go to www.itefy.com, click Login and sign in with your username and password. If you have multiple accounts, just select the account you want to use, and you're in!