Stress Monitor

Know when stress is building. Before you feel it.

Laso turns heart rate variability and heart rate data from your wearable into a real time stress score. It spots stress patterns across your week and offers guided breathwork when you need it most.

Download on the App Store

How stress scoring works

Your body has two clear signals when stress is elevated. Heart rate variability drops and resting heart rate rises. Laso watches both continuously and combines them into a single score from 0 to 100.

HRV deviation

Laso builds a rolling personal HRV baseline over time. When your current HRV dips below that baseline, it means your autonomic nervous system is working harder than usual. The further the drop, the higher the stress signal.

Heart rate elevation

A resting heart rate that is higher than your personal average often indicates that your body is under load, whether from mental pressure, poor sleep, or physical overexertion. Laso factors the magnitude of this elevation into your score.

Combined score

Rather than showing you two separate numbers, Laso weights HRV deviation and heart rate elevation together into one stress score. A score under 30 means your nervous system is calm. Above 70 means stress is significantly elevated and action may help.

Weekly trends that reveal your stress patterns

A single stress reading is useful in the moment, but the real insight comes from seeing how stress moves across your week. Laso charts your daily stress scores so you can spot recurring patterns.

Pattern recognition

Maybe your stress spikes every Monday morning. Maybe it climbs steadily through the work week and only drops on Saturday. Laso surfaces these rhythms automatically so you do not have to guess which days are hardest on your body.

Stress triggers

By comparing your stress trends with sleep quality, strain load, and recovery data, Laso helps you connect the dots. A night of poor sleep followed by a high strain day is a reliable recipe for elevated stress, and the weekly view makes that connection obvious.

Why personal baselines matter here

A stress score of 50 means different things for different people. Someone with naturally low HRV variability will have a different baseline than an endurance athlete with high HRV. Laso calibrates to your normal over time, so the weekly trends you see reflect genuine changes in your stress load, not noise from population averages.

Guided breathwork when stress is elevated

Knowing your stress score is step one. Doing something about it is step two. Laso includes a guided breathwork feature that activates when your stress score crosses a threshold you define.

When it triggers

You set the threshold. When your stress score reaches that level, Laso sends a gentle prompt offering a short breathwork session. The default is a score of 60, but you can adjust it higher or lower depending on your preference. The idea is simple: intervene before stress compounds.

How it helps

Slow, paced breathing at about 6 breaths per minute activates the parasympathetic branch of your nervous system. This directly increases HRV and lowers heart rate. Clinical research supports that even 2 to 3 minutes of this kind of breathing can measurably reduce acute stress markers.

Laso tracks your HRV before and after each session so you can see the impact on your own data. Over time, you build a personal record of how effective breathwork is for your body, which helps you understand when and how to use it best.

Related features

Stress does not exist in isolation. It affects your recovery and your sleep, and those affect your stress in return. Explore how Laso connects the full picture.

Recovery Score

See how stress affects your daily readiness and recovery trajectory.

Sleep Coaching

Poor sleep is the most common stress amplifier. Laso helps you fix it.

Start tracking your stress patterns.

Your wearable already collects the data. Laso turns it into clarity.

Download on the App Store Follow on Instagram

Free 7-day trial. iPhone & Apple Watch.