Longitudinal cognitive monitoring
Kronesis turns brief, repeated browser-based assessments into a personal history of cognitive performance—so change and signal quality can be considered together.
For personal monitoring—not diagnosis or a replacement for professional evaluation.
01 / Observe
The living system
The adult human brain contains about 86 billion neurons working through distributed electrical and chemical activity. A brief behavioral task cannot reduce that living system to a diagnosis.
It can record one carefully framed observation of attention, memory, inhibition, or response under the conditions of that session.
02 / Compare
Where Kronesis began
The founding question was not “How do you compare?” It was “How are you changing?” Repeated, comparable observations can form a history anchored to the individual rather than a population ranking.
That continuity may help older adults, people living with disabilities or long-term health conditions, and anyone paying close attention to cognitive performance—when the tasks and inputs are appropriate for them.
03 / Interpret
Meaning needs context
Device changes, accessibility needs, fatigue, sleep, medication, practice, motivation, and environment can all shape a session. Kronesis keeps those limits visible instead of turning a noisy observation into certainty.
A difference means “different from eligible recorded history.” It does not explain a cause, determine impairment, or predict disease.
The product
Three ideas organize the experience—from the first calibration to responsible interpretation and control of the record.
Measure
Begin with context, then collect repeatable observations.
Browser context
ReadyInput timing
ReadyFocused task set
Calibration describes the session. It does not adjust a result toward a desired outcome.
Understand
Compare with your own eligible history—not a manufactured population rank.
Control
Keep consent, portability, and deletion within reach.
Research access remains consent-bound, role-limited, and pseudonymous.
How it works
Calibrate first, take assessments second, and interpret monitoring only after comparable history exists.
Record privacy-safe browser context and complete a short timing check. Calibration comes before an assessment.
Brief browser-based tasks create repeatable observations of attention, memory, and response patterns.
Once comparable sessions exist, monitoring keeps uncertainty, exclusions, and changing conditions beside the pattern.
Scientific boundaries
Kronesis helps you observe patterns in repeated task performance. It does not measure neural activity, diagnose a condition, predict disease, or replace evaluation by a qualified professional.
Browser scheduling, hardware, display refresh, input method, fatigue, sleep, practice, motivation, environment, and accessibility needs can all affect performance.
Privacy by design
Longitudinal data deserves explicit choices, visible boundaries, and a clear path out.
Your longitudinal profile begins with an explicit choice, not an assumption hidden in setup.
Optional passive context can help interpretation, but it is not silently folded into a cognitive score.
Review choices, export information, delete selected records, or request account deletion.
Account identity stays in authentication. Kronesis stores preferences, privacy-safe browser context, raw events, and versioned derived results.
Terms of use
Kronesis is a personal behavioral monitoring tool—not medical advice or a diagnostic instrument.
Accounts are intended for people 18 or older who can consent to storing repeated assessment data.
Do not use Kronesis for emergencies, diagnosis, treatment, fitness-for-duty decisions, or as a substitute for qualified evaluation.
Calibration and quality checks reduce ambiguity but cannot remove every device, browser, environment, or human source of variation.
Provide accurate account information, keep credentials private, and use research features only with the required authority and consent.