Intermediate level swift - what kind of apps, besides games, make money?

Anyone know how to put my swift knowledge to best use?

I made my first iPhone app - it's called Simple Eat, basically a random food generator to test out my skills and put my first app on the iOS store. It took about a week to make and is free

now that that's done, what should my next project be? Looking to get some steady income

Added (1). @anon how do you know my level of swift based off an app? It isn't necessarily the case that the app represents my development capability. Also, how do you know how many hours each day I spent on it?

Added (2). for the record, I have a bachelor's degree in computer science lmao, probably more than you

How to get ITunes to stop billing you?

I haven't been using Apple Music for months now but I'm still being charged. I've cancelled my account through the Apple Music app and unsubscribed from from the app through Settings> Apple ID> Subscriptions. I've just checked them again and the app doesn't have my account on it and Settings tells me I've already unsubscribed, yet I've just been charged. They haven't billed me in a while, because my Paypal was connected to an invalid card. Once I've updated it, they billed me. I've contacted customer service with no avail. Does anyone know something that could help?

Any advice on password management that my tech-challenged, 72 year old mother can use on both her iPjone and CjromeBook?

It seems like every time my mom has to log into her account for any website, she needs my help recovering/changing her password. Each site, almost every time, every single day.

Is there any password manager type software that can work on both ChromeBook and iPhone that is dummy-proof and easy to use and that
keeps her login and password Iinfo synced for both devices? Or any ideas on a different solution to stop the constant daily password changing?

Whatever the solution is, it has to work with her limited tech-savvyness, short attention span, minimal patience, and horrible memory.

Screen time makes me feel sick?

Whenever I spend a while in front of a screen, it feels like my stomach hurts. Like I'm sick to my stomach. Also, after I spend time on the screens, my eyes are blurry and I have dull color vision. I also feel like it messes with my brain, and this is the hardest thing to deal with, since it feels like I'm in sort of a zombie state with severe "brain fog". The screen I'm using is either an iPhone or iPad screen. Do other people have this? What can I do to fix it? Does it matter what type of screen I use? (I even keep the blue light filter on most of the time so that it's easier on my eyes, but it doesn't seem to help much.) What is going on? (Especially with the brain fog?)