I did something similar. I wanted to tell myself I had done it, but also it was an inexpensive learning experience and I got an app that I wanted out of it.
And I think I got that. I like how mine does what it does (maps breaker panels and records home maintenance and stuff) without someone trying to sell me something.
But once I realized what advertising costs everywhere, I pretty quickly realized that app exists essentially just for me.
And that’s ok, but it’s a stark contrast from the goldrush years of (even garbage) apps making money.