Logseq, it's geared to daily notes and visualizing everything in a graph, and support KaTeX. It also supports org-mode. If it fits your workflow I'd recommend i

Logseq, it's geared to daily notes and visualizing everything in a graph, and support KaTeX. It also supports org-mode. If it fits your workflow I'd recommend it. Personally I feel like Obsidian does too many things and none too well.