There is version with installer and uninstaller here
http://iristech.co/download/1923/
It needs the location for automatic dimming.
The restart is needed, because it makes your monitor better for your eyes (removes flicker, blue light, etc.) and removes some Windows limitations.
More specifically:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ICM
GdiIcmGammaRange
Nobody needs your info or anything like that. There is no info stored on the server also.
Again it’s not a big company, it’s one man project.
This is the website:
http://iristech.co
You can find my phone here and if you really want I can give you my home address.
Daniel