I backed the project on 15th December 2017, and it was supposed to ship to me in April 2018. But as usual, crowdfunding projects are always delayed. I received it on the 11th of September 2018.
uHoo is a indoor air toxin sensor that was launched in April 2017. They started shipping within the same month to their corporate customers as those are their primary target audience. For the general consumers like us, they started shipping in June 2017.
After raising a seed round from East Ventures in May 2015, in May 2016 they started an Indiegogo project to crowfund the initial preorders. It a raised a total of US$81,065 out of their initial goal of US$50,000 from 404 backers.