The drawing pin icon doesn't seem to do anything. Is it suppose to lock the window position in place?
I think I encountered a minor bug where purchasing the "lofi" song wouldn't register as bought. The song would play but the lock icon didn't disappear. Resetting the game fixed it.
Her boobs move too much like jello. It's very easy to have them clip through the girl's body if you wiggle the mouse fast enough.
I'm not really sure how progression works currently. Is it just based on idle time? Maybe a progression system based more on interactivity would be better? Seems like a good way to encourage user engagement.
She needs to be way more emotive. One of the first things I noticed is she does not even blink lol.
I don't think there's much point in having so many music options. The user will probably opt to play music from their browser or with a dedicated music player app.
Since the idea is for her to be a desktop waifu it would be cool if you could play games with her (within the app of course). I don't know if the backgrounds are 3D but it would also be cool if you could maybe enter fullscreen mode and look around /interact with the world she's in. Perhaps she could also do other basic assistant stuff like set alarms and reminders.
I agree with the other reviewers that you're better off not including much lewd stuff if you aren't going to commit to R18 content. Modders will probably add it in for you anyways.
Hopefully I don't come off as overly critical. It's very clearly an early build but I think it has potential. Especially if you add decent mod support.