Obsidian

I've used Obsidian for a couple years. It's a very good note-taking app. Vault (a paid add-on) makes syncing across devices effortless, but other cloud solutions also work. Composing in markdown's fast: your hands never leave the keyboard. It stores notes in markdown, so there's no lock-in: you can open them in a text editor. Once a note is synced to your device, you can reliably get to it even when you're offline. Quirks are in tables (a bit clunky) and the outline (hard to find on phones).

This is literally the best note-taking app i've ever seen in my entire freakin life. Like literally, i cannot find one, literally one con that this app has. It's good in note taking, formatting, sharing notes, navigating your notes every single thing...This app is literally good at every single things possible. Especially the zettlekasten, it just makes it so easier to navigate! And the best part? It works offline. So even when i don't have internet and i need to take notes i can just..Go ahead!

Obsidian is by-far the best note-taking system I have ever used. The markdown rendering is best-in-class, with the extension ecosystem making it both flexible and powerful. I also recommend the native sync functionality, which is the best I have ever encountered -- I wasn't able to create sync conflicts even when I tried to. I genuinely can't recommend it enough. Obsidian will change your life!