Shiftool is an app specialized in managing your work shifts. You can request a shift swap if your colleagues also use Shiftool, and you can also offer your availability for other shifts. The app searches for shift swap opportunities and makes suggestions. You can also create read-only invitations so your family and friends can see your shift schedule. It also allows you to work with multiple calendars in case you work for more than one company. The terms and conditions can be found at the following link: https://shiftool.com/terms.html