The tax office will ask where you were.
Your phone keeps track. You'll know each day where you stand and whether you can go, and your accountant gets the file in one tap.
Nothing to do
Install it once and it records your countries and cities by itself, even closed, without draining the battery.
Can I go?
A destination and dates: yes or no, and the last day to come back if it's no.
The file is ready
A signed PDF, day by day, with your proof. Any change shows.
The country, not the address
Your position becomes a city, then the coordinate is discarded. Nobody can retrace your streets.
Daytrace counts days. It doesn't determine your tax residence and doesn't replace a tax adviser: home, work and economic interests also count.