Yup... If you selected "Save To Disk".
Otherwise, it's basically browser cookies.
I seem to be stuck. The journal for Hang says to continue meeting on Monday, but when that happens the game says I can't advance Hang until finishing Charlotte. But Charlotte says I need to talk to her when she comes over, and I never get the choice to talk to her. Everybody else is waiting on Hang or to progress the main story. What did I miss here?