Hi Tim, thanks for replying :) I don't have an android device to check it but a friend of mine did and said the following improved things 

"You have to press the main menu button. Then it saves." 

I hope that helps. I'm hoping to pick up a cheap android tablet in the future so I can do more thorough testing and maybe improve the experience there. The program was done in Ren'py and it sometimes has some issues with persistent variables on android devices and this sounds like it might be related. At the very worst, maybe we can implement an actual save button (although I think it may not be compatible with the persistent variables... I'll have to check with Bob.)