what the different between the 0.5 gb and the 3 gb update? i had been answered that they are the same but the 0.5 gb is smaller to be able to use to some players. i have 7 gb free to download the 3 gb version but it not works no matter how much i download it!! i play it on a mobile phone although but i download the 3 gb v. apk and it didn't work. i tried downloading it zip and play it in "joiplay" but the app tell me that this came isn't support yet. how can i download the 3 gb v. to be able to play it in my mobile? is the graphic in it more interesting or the same as 0.5 gb v.?
What people told you is correct. the only difference is the compressed version has reduced audio/visual quality to be installed on phones without enough space. I have tested both on my Pixel 3XL and I can't see a difference. You would only notice on something the size of a tablet or larger. A 5" phone screen simply isnt big enough to see the difference.
You need to have ~15GB of free space to install the full size apk. Android requires more space than the size of the APK to install. Thats a limitation of Android, not CoR.
Joiplay does work with cor, you need to have the renpy plugin and download the windows version. Follow the steps here: http://cor.fandom.com/installation