No. I have no need too. My temps stay at what I set them at. Sometimes they fluctuate a degree or two, but barely ever.
I would be careful there. Hovabators are notorious for having crap thermostat wafers. If that thing fails "on" you will cook the eggs. I wouldn't trust anything less than a good proportional thermostat with my eggs (or my animals). Helix or Herpstat.