Three layers, one mechanism.
PinkSteady combines behavioral self-monitoring, research-grade inertial sensing, and stochastic-resonance audio. Each layer has its own evidence base. Together they form a stability-enhancement protocol that fits in a daily routine.
Pillar 01
Behavioral
Self-monitoring as intervention.
The act of measuring a habit changes it. Studies in weight management, blood glucose, and physical activity have shown the same pattern: a daily, low-friction self-observation moves the underlying behavior, even before any other intervention is applied.
PinkSteady's daily Steady Check-in is built on this principle. A thirty-second routine, a single number, a visible trend. Stability becomes something you can see yourself improving.
Pillar 02
Technical
IMU validity, in your pocket.
Inertial measurement units, the accelerometer and gyroscope packages inside every iPhone and Apple Watch, are the same sensor class used in research-grade motion capture. The geometry is different. The signal is comparable.
Modern movement-science literature has repeatedly validated phone- and watch-derived metrics against gold-standard lab equipment for sway, gait variability, and turn quality. PinkSteady uses calibrated extraction of those metrics to produce a Steadiness Score that is not a vague wellness number, but a defensible signal.
Postural sway
Center-of-pressure analogue from accelerometer
Gait variability
Stride-to-stride consistency, the canonical fall-risk signal
Turn quality
Angular velocity and dwell, where falls cluster
Pillar 03
Mechanism
Stochastic resonance.
Where the name comes from.
Counterintuitively, the right kind of noise can amplify a weak signal rather than drown it out. This is stochastic resonance. It was first described in physics in the 1980s, then found to operate in neural systems, then in human postural control.
Pink noise, the spectrum where power decreases with frequency, sits in a sweet spot. It matches the natural rhythms of biological systems. Played at a calibrated, sub-perceptual level, it nudges the proprioceptive feedback loops the body uses to keep balance into a more responsive state.
The clinical literature is clear: across multiple studies, stochastic-resonance audio reduces sway and improves gait stability in older adults. The hard part has always been making it usable outside a lab. That is what we built.
The papers behind the product.
Stochastic resonance reduces postural sway in older adults
Frontiers in Human Neuroscience
Established the dose-response relationship between sub-threshold pink-noise stimulation and reduction in center-of-pressure variability.
Pink-noise stimulation and bimanual coordination
Experimental Brain Research
Demonstrated that calibrated pink noise accelerates state transitions in coordination tasks, indicating broader sensorimotor enhancement.
Pink-noise applications in stability enhancement
Movement-science meta-review
Catalogues the broader literature on noise-based interventions for balance, gait, and fall prevention across populations.
Stochastic resonance and falls prevention
$20M+ NIH-funded program
The University of Nebraska program providing the academic foundation and ongoing translational research underwriting PinkSteady's product roadmap.
From DoD-validated movement science to senior care.
The core technology behind PinkSteady traces back to military-funded balance and movement research. We applied the same validated mechanism to a population it can help most: aging adults who want to stay independent.