Recently came across this - surprised nobody found it earlier.
http://www.i3-thermalexpert.com/"Thermal Expert" by a Korean thermal imaging company "i3" (not to be confused with L3, who also make thermal imaging gear).
Details are vague but this is what we know;
- Release Q3 this year
- 384 x 288
- Android only at launch
- -20 to 100 degrees Celsius
Images supplied by i3 on their website appear to be very good quality - on par with Therm-app? Curiously the GUI has 2 video buttons.
Obviously the big question is price - I can't find any mention of price except here:
http://www.tempsensornews.com/thermal_imaging/prototype-low-cost-smartphone-thermal-imager/Which states "Numbers like $500 per unit with more than 3 times the 32 K pixels of the ~$250 Seek Thermal and were heard resonating on the Expo floor."
Also here:
http://electronics-eetimes.com/images/01-edit-photos-uploads/2015/2015-06-june/2015-06-19-eete-jh-yole2.jpgWhich states "<$500 USD" but also a 2016 release date which is not in line with the "Q3 2015" figure on their webite.
EDIT: They have a video on their youtube channel:
It looks like the framerate isn't the best, and the lens has some sharpness issues at the edges, but still, it will certainly be the best option available at it's price point (assuming the $500 figure is true)