Hey, now. Seven bits per character were good enough for Granddad, they should be good enough for you.

I looked at Joplin before switching to Obsidian from OneNote. It has a mobile app but I don’t know if it does local storage or not.

I didn’t take me more than a day to learn (I don’t understand) React.

You have no tasks, there’s nothing to manage. I’d say you’re done for the day.

Your data, being in Markdown format, is portable to anything that can handle the format so should Obsidian change its policies or make the app itself paid you’re not SOL. But you will lose the functionality that Obsidian and its plugins provide, which could make that data less valuable to you in the short term. Nothing’s perfect.