The free version is on this page. You just have to scroll a bit (for some reason they push the paid version up to the top).Look for 1.52 Public.
Thanks
I just downloaded the game and when I tried to run a save from the previous version this happened
File "renpy/common/00action_file.rpy", line 462, in __call__
renpy.load(fn)
File "game/script.rpy", line 592, in <module>
AttributeError: 'Girl' object has no attribute 'f_name'
