Thermodo is a tiny electrical thermometer that measures the temperature right where you are on your iPhone, iPad and Android devices. I don’t think Windows Phone support will be there since the stretch goal of US$400,00 (in order for Thermodo to come out with a Windows Phone app) was never met. You can download the Thermodo app on Apple App Store or Google Play.
The estimated delivery date is in August 2013 but it was delayed for about 5 months. It was shipped to me on 30th January 2014 and I received it on 10th February 2014.
I am one of the early birds, so I paid US$19 + US$10 (Shipping) and that amounts to US$29 (S$37).
It works as advertised but I am not too sure about the accuracy since I don’t have a room thermometer to compare the temperature with. However, their update did mention users comparing it with a room thermometer and it is spot-on accurate.
You might get warmer readings as well since your device do produce heat and hence in the settings, Thermodo do allow you to compensate for your device heat as shown in the iOS screenshots further below.