Im seeing the same thing. In the about tab, it shows .03.90 but i dont have access to day 3
if playing on mobile (Just found this out honestly)
the menu image still says day 2, I honestly wasn't aware that image was still visible as it got replaced with an animated background in with the female update to day 2 that apparently did not transition to mobile
so that image was never replaced for day 3 because we didn't know it was visible.
There is a small update coming middle of month to fix some things, grammer, some code, few route changes. and I will have that corrected in that.