Hear me out. An app that is a planner, diary and tracker.
For example you can track things like your period or mood, per day or week whatever you like,
cause you can customize it to your preference. You can also add photos or videos per day or if that's not for you, add text.
This way you can use it as a videodiary or a regular one.
Maybe you want to reminisce on a holiday, easy, you might have wrote things down, picked your mood or added pictures.
Maybe you even labeled your holiday even better!
The ideal version of this would be a combination of an app like goodreads/letterboxd with the wheather, agenda, photo, notes app.
I guess you can make this into social media form but it's not my preference.
Is this realistic? Probably not. Do I need this? Yes.