Da Time beta?

I received email inviting me to beta test a time-tracking mobile app called Da Time. Has anyone heard of it? Seems legit in terms of having the usual social media accounts for its company Da Relative, based in France.

I installed TestFlight and their app - it wanted Google permissions I wasn’t happy about (allow edit and delete of contacts) so set it up with a nonGoogle account. But the app doesn’t seem to do anything and no clues for how to track things.

I tried replying to the invite email, but it was a no-reply address so I deleted everything. It sounded like an interesting idea - anyone else testing it?