Science & Accuracy

Research that shows upin every metric.

QALO turns your body's signals into scores you'll act on so how we build those numbers matters as much as the numbers themselves. Here's the testing, the advisors, and the data behind every reading.

[ - Data-Driven Algorithms - ]

The hours behind the algorithms.

Every score QALO gives you was built on recorded data, not assumptions.

  • 500K+

    Hours of sleep studies

  • 380K+

    Hours of vitality studies

  • 35K+

    Hours of activity studies

Three sensors.

[ - Hardware - ]

Three sensors.Always reading.

QALO uses the latest sensor technology to track your body around the clock, collecting data continuously from three separate systems.

  • PPG SensorEmits light to measure changes in your blood flow which is the source of your heart rate, HRV, and blood oxygen metrics.
  • AccelerometerDetects movement and orientation, for steps, activity, and sleep.
  • NTC thermistorsSense variations in temperature, read against your own baseline.
Tested as they’re built.

[ - Rigorous Testing - ]

Tested as they’re built.Then tested again.

Lab testing runs continuously alongside production, so sensor performance is verified as our devices are built. Testing then continues at QALO Labs, against reference equipment and against each other, so our algorithms and hardware continuously improve.

Trained on almost

[ - Data-Driven Algorithms - ]

Trained on almosta million hours of data.

QALO’s sleep algorithm was trained on more than 950,000 hours of recorded sleep. Because sleep is where your body reveals the most about recovery, that same foundation informs our Vitality and our Training Effort algorithms.

Not an average metric.

[ - Personalized Health Data - ]

Not an average metric.Your personal baseline.

QALO is built to show you trends in your own body over time so your data is uniquely yours. Your readings matter most against your own baseline over weeks, not as a single-morning verdict.

Everything included. Nothing recurring.

  • Every metric tracked with no monthly fee.

  • Stored on US servers. Never sold. Yours forever.

  • Use your funds to invest in subscription-free health tracking.