Can I start a shift on my phone and end it on a laptop?
Yes. There is one open shift per person, whichever device started it.
From the guide Using the Seayora app as a contractor or technician.
Starting the day
Open the time clock and clock in against the job you are starting. Your company may set rules on the clock: that you are near the job, that your phone confirms it is you with your face, fingerprint or passcode, or that you take a photo of the finished work before you clock out. A clock-out is never refused for being away from the job. See “The Time Clock”.
Read the whole guide: Using the Seayora app as a contractor or technician