Mind Log - advice?

I built MindLog, a free web app that helps users track mood, sleep, stress, and focus over time.

Users complete quick daily check-ins, view trends in their entries, and can use an AI-guided reflection tool to think more deeply about what they logged.

I’m trying to figure out what would make it genuinely more useful rather than just adding random features.

If you want to try it: mindlog.org

It’s completely free, and I’m mainly looking for feedback on what I should improve next!