Health scores that are actually about you.

Laso is a health intelligence app that turns the data from your wearable into recovery scores, strain targets, sleep coaching, and early wellness detection. Everything is processed on your device, calibrated to your body, and designed to help you make better decisions about how you train, rest, and recover.

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The problem we're solving

Most health apps compare you to population averages. That means a naturally low HRV person gets told they are "below average" every single day, even when they feel great. Someone with a high resting heart rate is flagged as unhealthy when it is actually their normal.

Generic benchmarks create noise. They generate anxiety for people who are perfectly healthy and false reassurance for people who should be paying attention. The result is that millions of people track their health data every day but don't actually learn anything useful from it.

Your body is the only valid benchmark. A meaningful health score has to reflect what is normal for you, how you are changing over time, and what you should do differently today. That is the problem Laso was built to solve.

Our approach

Laso is built on three principles that guide every product decision we make.

Personal baselines

On-device machine learning builds a picture of what is normal for you. Your recovery score, strain targets, and sleep recommendations are all calibrated to your unique physiology, not population averages.

On-device processing

Every calculation, every model, every analysis runs locally on your iPhone. Your health data never leaves your device. There is no cloud, no account, and no server that stores your information.

Actionable output

Laso does not just show you data. It tells you what to do about it. How hard to train today. When to go to bed. Whether a pattern in your metrics suggests you should ease off before you get sick.

Privacy by architecture

This is not a marketing choice. It is an engineering one.

Your health data never leaves your device because the app is designed so it does not need to. All machine learning models run on-device. All scores are computed locally. There is no server that receives, processes, or stores your health information.

No account is required to use Laso. There is no sign up flow that collects your email, name, or any identifying information. Sensitive data is encrypted with AES-256, and encryption keys are stored in the Secure Enclave on your iPhone.

We built it this way because health data is some of the most personal information that exists. You should not have to trust a company's privacy policy to feel safe using a health app. The architecture itself should make misuse impossible.

What powers the analysis

Laso combines established health science with on-device machine learning to turn raw wearable data into meaningful insights.

HRV based recovery and stress assessment

Heart rate variability is a well established biomarker for autonomic nervous system balance. Laso tracks your HRV trends against your personal baseline to assess recovery and stress levels with context that is specific to your body.

Circadian rhythm analysis

Laso analyzes your sleep and wake patterns to understand your natural circadian rhythm. This drives personalized sleep coaching that accounts for your actual schedule, not a one-size-fits-all bedtime recommendation.

Multi-metric anomaly detection

By monitoring changes across HRV, resting heart rate, respiratory rate, and sleep patterns simultaneously, Laso can detect early wellness pattern changes before you feel symptoms. A spike in one metric might be noise. Correlated shifts across several are a signal.

Personal baseline drift detection

Your baselines are not static. As your fitness improves, your normal changes. Laso uses on-device ML to detect when your baselines have shifted so your scores and recommendations stay accurate over months and years.

Built for people who already track

You already own a wearable. You already generate health data every day. Laso makes that data useful without asking you to buy anything new or change your setup.

Laso works with Apple Watch, Oura, Garmin, WHOOP, and 20+ other devices through Apple HealthKit. If your device writes data to the Health app on your iPhone, Laso can use it.

Get in touch

Have a question, feedback, or just want to say hello? We would love to hear from you.

App Store @healthlaso

See what your wearable data is really telling you.

Laso turns the numbers into answers. Try it free for 7 days.

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