Product review (2 stars): App Doesn't Function as Expected
I bought the D'Addario Humiditrak a year ago because I live in a dry climate and I liked the idea of receiving an alert if the humidity dropped too low. I also take my instrument quite a few places and was concerned about how many times it gets bumped in transit.

Although the Humiditrak does track temperature and humidity on their app, the app leaves something to be desired. I had set up "push" notifications for the app on iOS but don't receive them in real time, sometimes days later when the instrument is sitting in my living room, and if I try to view an Impact Incident, the app crashes every time. I emailed the manufacturer and the programmers of the app, and the response I received was "We've never heard of this happening before." No resolution was provided, and the app hasn't been updated since I've owned the device.

I gave this two stars because it does measure the temperature and humidity, but for my purposes, without the functional app, this was an overpriced purchase.