I built an app that checks if you're paying attention in boring meetings

I built FocusPulse after realizing I'd often think I was following a meeting, only to discover I'd mentally drifted when someone suddenly asked me a question.

It sends random vibration prompts during meetings. If I notice one, I tap it. If I miss it, I probably zoned out.

It calculates a Focus Score from my response rate and reaction time.

It's completely free, has no ads, and doesn't require an account.

I'd love to hear what you think. Is this something you'd actually use in your day-to-day meetings? If not, why? And if you would, what would make it more useful?