This is the epitome of "my idea didn't get stolen, it just got tired of waiting"! Just kidding (although I did have a similar idea for an app a couple months ago but didn't end up fully commiting to it.)

Anyway this is a pretty useful idea. What made you start off creating it?

You got the gist of it. Then it just kind of took off.

The TLDR:

Where it started: me standing in front of a long aisle of dog food bags at Costco, racking my memory for which kind I was supposed to buy next for my finicky golden retriever, Kilo.

How it ended: me building Rotation List, so nobody will ever have to forget again.

I explained more in:

https://www.indiehackers.com/post/ai-killed-the-mvp-whats-ne...

With an AI assist, there was no reason to stop adding improvements as I thought of them, so I didn't.