Nest Learning Thermostat - If you can save money in your business operation, it is always good. It means more capital for equipment, perks, and vacation. Let’s face it, it is not fun paying the utility bill; but buying a new lens is like a holiday.
If you have a programmable thermostat in your studio or house, there is an 80% that it is not programmed. Translation, not saving you money. The Nest learns from your habits and programs itself. The web and smart phone apps allow you to adjust the temperature from anywhere. See the five star Cnet review here.
Bubble Level Pro - this free apps is one every film maker and photographer should have. There are more elegant and feature packed levels out there, but this one is simple, free and easy to use. Great for leveling a dolly or slider, hanging a photo and it is always with you.