I have had the same dilemma just these past few weeks. A first time RV traveling with dogs and a cat. I found a nice web based program to download and remote control my computer via my smart phone. That being said if I have no cell service and/or the power goes off I won't be able to monitor the temperatures. Fortunately, we will be less than 30 minutes from the RV camp so I can head back to check on the pets. I set this up on my laptop in view of a large garden thermometer to view while we are away. Have been using inside our house now for a week and all is going well.
