Even though there are a few Bluetooth temperature and barometer sensors that are lightweight and clip onto your backpack, most seem to be specific to GPS watches (e.g. Fenix 3). I'm wondering why there aren't more options for iOS. These are all I have found. Anyone have a better option or know of something that actually works?
Tempi at http://mytempi.com/#
This seems to be what I want. It starts shipping in March and there is no app in the App Store yet. Not holding my breath.
Tempo Disc at https://www.bluemaestro.com/temperat...nergy-sensors/
Also looks interesting. Can't find any reviews or much info beyond the web site.