This is cool. Didn’t know you could get rid of the flicker using software. Just purchased.

Thank you Paul. The flicker comes from the backlight rapidly switching on and off to dim itself. Tap Zap holds the backlight at 100% so there's nothing to flicker, then dims in software instead.

I'm assuming that Flux has issues blocking the full blue light spectrum then?

Yes, f.lux doesn’t block blue all the way. It’s capped al~1200K Tap Zap goes to 0K. Pure Red.

mac books have PWM ?