I'm working on Chapter 6 right now and it's over 70% done. ( art is soon going to be done but I need to code basically all of it and add all the polish and sound etc. )
I will probably release chapter 3 publically when Chapter 7 comes out, which will take more months.
I think Chapters 1-4 will end up free eventually, but I'm not sure if I will release more than that for free. I'll have to wait and see.
Chapter 5 will not be free in over a year if it even becomes free.
To get the latest build on Patreon is 3$, and u can always just support once and then remove your pledge when a new build comes out! Or wait for the full release of the game! ( I don't know what the price of it will be when completed. )