wow ok, that investment system needs some work, cuz oh boy was it easy to abuse. i just worked day after day, investing every penny when it was low (like under $5) then the day it hits something like $12 or above, i sold it all. do that like 2 or 3 times and you basically have infinite money.
other things of note. the progress bar doesn't seem to be working as intended. it only keeps track of 0 to 100 of full level. not keeping track of indvidual levels. though you probably already know that. and its a million times better than nothing so im not complaining of its flawed inclusion at all.
double potions was a complete waste of time and money, as its not an option to use in your bathroom.
also, the big maid cafe job doesn't tell you how much it makes. ($150 btw everyone)