Aurora, I was able to download it with my Samsung S4 Mini, which is most likely NOT compatible. It wouldn't work with my Seek, and the S4 Mini is not on Flir's list of compatible devices. The Play Store says that of my many Android devices, only the S4 Mini was compatible....go figure.
The app installed ok and has some sample pix, also the Flir Tools app can view these pix and report their info.
Taken 5/16/2014
Image Size 120 x 160
Camera *(*)
lat/long puts it near Stockholm Sweden
Some info like Rel Humidity, Atmos. Temp, IR Window temp, Emissivity are editable/saveable.
Lots of stuff to explore.
I'll try to side load the app onto something else later today.
I also got an e-mail update saying the same as Milke ...."week of Sept 7"----> most likely to ship on Sept 11.
...ken...
Update:
I was able to sideload the Flir One app for Android onto my $US49 DigiLand DL701Q tablet which the Play Store said was NOT compatible.
It runs (of course I don't have a Flir One yet) as it did on my S4 Mini. Flir Tools Mobile runs as well and shows the same info for the sample images.