While it is incredible hot here in Europe (up to around 40 Â°C/100 Â°F) Xetra, the developer of Xbar had a great idea - using the Battery as a Thermometer!
It shows you the current battery temperature in Celsius and Fahrenheit and while this might be relative inexact as long as you hold the Smartphone in your hands its working not that bad if you put it for a while onto a table:
Above you see the difference between my office (34 Â°C - ouch :o) and after 5 minutes in the sun 40 Â°C.
Cheers ~ Arne
Related Links : [More Information] [Download Here] Source : [Smartphony.org]