Quite sad indeed, I bought a few of those things and they are quite helpful…
Regarding the open-sourcing of the app, I started a Python library that can control a TriggerTrap from any computer (think “RaspberryPi”). If anyone’s interested:
PyTriggerTrap - Control a TriggerTrap device without the smartphone app.github.com
I case anyone’s interested, I can also share the knowledge I acquired while reverse-engineering my TriggerTrap (like, to build a open-source app from the ground).