(Just for the detail): joiplay is an android app based on tools like mkxp (and maybe others), making it possible to run on a phone things like games using RPG Maker Vx Ace and such. (Basically some games have their data and scripts spreadout outside of the executable, so using an application acting like said executable makes it possible to run those scripts and data on inintended hardware/OS) (I think it can be compared to ScummVM for some old PC games or easyrpg-player for rpg maker 2000 and 2k3 games in that sense, though I heard it was not as userfriendly, and has ads).
No idea if joiplay has even VN maker compatibility, but that's the gist of it.