It Answers the Question, ‘Why Would Anyone Need a Smart Diffuser?’
There was a time, not long ago, when I thought the concept of a smart diffuser was like giving a fish a bicycle. Why does a diffuser need to be smart? Well, after trying out the Pura 4 Smart Diffuser, now I know. (But if you read this review and still prefer your scents “dumb,” go ahead, get a candle.)The Pura 4 turns out to be pretty useful gadget, and a lot of fun. The basic functions are what you’d expect from any plug-in diffuser—you start with a scent cartridge and the wall plug, which is larger than a drugstore plug-in, but still pretty compact. The difference is that while it’s plugged in, it only releases scent when you activate it via the app. As with other smart apps, you can turn it on indefinitely, or set a schedule: an hour each morning, or for four hours at sunset. The unit a...










