Yes ... an app could do the same thing. But with a big physical ON/OFF button, the Work Recorder could be just a tad more accessible, which could in turn make the difference.
Hours and minutes are displayed with the same LEDs. Minute intervals of 5 are shown with a low emitting intensity, hours with a high intensity.
Out for a cigarette, yesterday's forgotten hours, interrupting phone call, sudden meeting, etc.
This feature is actually not working on the prototype, and also lacks a proper indicator for project in focus.
RTC (+ crystal)
Coin cell battery
Rotary encoder (12 steps)
Natural white LED
Bunch of resistors
It doesn't include a multiplexer. The dimmed minute intervals were achieved by using the Soft PWM library (not too too good for filming tho..)
Also, the code is non-postable, it's an embarrassing mess that makes no sense to no one.