Time Tracking for Employees

What does everyone like for time tracking apps for farm employees? We are looking to make a change from the app we currently use.

At minimum, I am looking for something that I can access instantaneously that incorporates push notifications when they’ve clocked in and out (and reminders for them to do so), a calendar that they can request time off, and a space to provide a brief detail of what they worked on that day. Doesn’t have to be free, but bonus points if it is. Thanks.