I've been dealing with work anxiety for months and stumbled across Breath Tempo https://breathtempo.app/ while searching for something simple. No app to install, no account, just open the browser and follow the visual rhythm. I started with Coherent Breathing — five seconds in, five seconds out — and within a few minutes my chest actually loosened up. What I appreciate most is that it doesn't oversell itself. There's a whole guide section explaining the science behind slow exhalation and which techniques suit different situations. Box Breathing has become my go-to before meetings. The fact that history stays local on my device feels right too — it's a private practice, not a metric to share.