The first digital wearable
for cognitive health.

Parva helps you understand how your brain is doing day to day, through the way you focus, write, switch tasks, and sustain attention in real life.

Start Getting Care Get Started See how it works →
5 conditions
ADHD · depression · bipolar · autism · dementia
Passive
No input required
Clinical
Detailed reports
On-device
Private by design
Parva Lv.12
630/1000
PARVA
Georgia's to-do:
Write 1,200 words
Avg 72 WPM
Message 2 friends
Morning run
Daily Progress 50 2/3
84 WPM
72% rhythm
1.2k words
The problem

Mental health is still
treated like it's 1995.

ADHD, depression, bipolar disorder, autism, and cognitive decline are still evaluated through snapshots: short appointments, memory-based self-reporting, and clinicians trying to infer patterns from incomplete data.

But cognition does not happen in a clinic. It happens all day — while we write, focus, switch tasks, lose momentum, recover, and repeat.

We now spend most of our working lives on computers, generating a continuous behavioral signal of how our minds are functioning. Physical wearables made this normal for the body. Cognitive health deserves the same standard.

Parva is the first digital wearable for the mind.

Condition coverage
ADHD
Attention drift, task-switching fragmentation, output bursts
Depression
Output decline, slowed cadence, session collapse over time
Bipolar disorder
Volatility cycles, mania velocity surges, depressive troughs
Autism
Routine consistency patterns, sensory load, transition difficulty
Dementia
Longitudinal decline curves, early language and rhythm changes
Alzheimer's
Lexical complexity loss, semantic drift, processing rhythm shift
What we offer

Complete cognitive health care,
from first signal to clinical action.

01 Effortless Use
02 Cognitive baseline
03 Medication tracking
04 Clinical reports

Installs once. Runs forever.

A lightweight macOS app captures behavioural signals from the way you work — typing cadence, output volume, focus duration, attention switching — without reading content or requiring any input from you.

Live cognitive signal
Typing cadence Output volume Focus duration Context switching

Your cognitive fingerprint, mapped over time.

Parva establishes your personal cognitive baseline across weeks. Deviations from that baseline — in either direction — become clinically meaningful signals your care team can act on.

Cognitive score over 8 weeks
Baseline 64
W1
W2
W3
W4
W5
W6
W7
W8
Week 3 dip flagged as below-baseline event

Objective evidence of whether treatment is working.

When a prescription starts, changes, or stops, Parva measures the effect on your cognitive performance day by day — giving clinicians real-world evidence to inform decisions.

52
Before medication
Focus score
Consistency
Avg session
Rx started
74
After 3 weeks
Focus score
Consistency
Avg session

Reports built for clinicians, not spreadsheets.

Parva generates structured clinical reports covering baseline, medication response, and trend data — designed to travel with you to any provider.

Cognitive Health Report
Apr 2026 · ADHD (Inattentive Type)
68/100
47
Focus sessions
71%
Consistency
+12
Score change
Active
Alert flag
Detection & intervention

See what's coming
before it arrives.

Early
detection
7
years before symptoms
Critical
intervention
3
days advance warning
Early detection · Alzheimer's & Dementia

The brain's decline doesn't begin with forgetting. It begins with subtle, compounding shifts in how language is produced, years before any symptom is clinically visible.

01 Lexical complexity decline Alzheimer's
Vocabulary range and sentence complexity narrow gradually in the years preceding Alzheimer's onset. Parva tracks this trajectory across millions of daily keystrokes, before it becomes visible to anyone, including the person experiencing it.
02 Semantic coherence loss Dementia
As working memory degrades, the logical thread between sentences weakens. This manifests in writing before it appears in conversation. Parva detects the drift years before a clinician would flag it.
03 Processing rhythm shift Both
The cadence of thought-to-text (pause patterns, revision frequency, burst length) shifts detectably years before memory loss becomes noticeable to the outside world.
Critical intervention · Acute events

Some crises don't arrive suddenly. They build over days. Parva identifies the behavioral signatures before they peak, giving you and your care team a window to act.

01 Stroke risk Acute
Sudden drops in linguistic fluency and motor timing are established precursors to ischemic events. Parva detects these shifts in the days before they become emergencies, when intervention is still possible.
02 Manic break Bipolar
Racing output, accelerating word velocity, and compressed pause patterns are measurable days before a manic episode peaks. Early flagging gives clinicians a window that medication changes can still close.
03 Extreme exhaustion Cognitive
Cognitive output degrades in predictable, measurable ways under severe fatigue. Parva identifies the trajectory before it reaches a dangerous threshold, not after the crash has already happened.
Sample Report

What a Parva report
looks like.

Reports are designed to be shared directly with clinicians. Every report covers cognitive baseline, medication response, episode risk, and week-over-week trends.

Cognitive Health Report
Apr 2026 · ADHD (Inattentive Type)
68/100
+12
Score change
71%
Consistency
47
Focus sessions
Medication response: positive — score up 19 pts
Active alert — clinical check-in recommended
Generated by Parva · All data captured passively on-device
Cognitive Health Report
Patient ID: PRV-20847  |  Period: 1 Apr 2026 to 30 Apr 2026  |  Condition: ADHD (Inattentive Type)
Overall Cognitive Score
68/100
+12 pts from prior period
47
Focus sessions completed
23 min
Average session duration
71%
Attention consistency
Baseline: 64%
74 WPM
Average typing speed
4.2x
Context switches per hour
Elevated (baseline 2.8x)
Weekly Cognitive Score
Week 1 (pre-medication)
52
Week 2
61
Week 3
70
Week 4
74
Medication Response Tracking
Rx Change
Vyvanse 30mg initiated April 8, 2026
Pre-medication (Apr 1-7)
Focus score: 52
Consistency: 58%
Avg session: 14 min
→
Post-medication (Apr 8-30)
Focus score: 71 +19
Consistency: 74% +16%
Avg session: 26 min +12 min
Clinical assessment: Measurable improvement in sustained attention and output consistency following initiation. Recommend dosage review at Day 45.
Predictive Flags and Event Detection
April 14-15  |  Resolved
Typing cadence dropped 34% over 3 consecutive days. Pattern consistent with pre-episode attentional collapse. Low-focus event confirmed April 15. Signal detected 48 hours in advance.
Current alert  |  Active
Attention fragmentation increasing over past 4 days. Output volume down 28%. Pattern is consistent with pre-episode cognitive signature observed in prior months. Clinical check-in recommended within 5 days.
Cognitive Performance by Time of Day
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
Peak focus    Moderate    Low
Generated by Parva v2.4  |  All data captured passively on-device  |  No content was read or transmitted  |  Report period: April 2026

Try the first digital wearable
for cognitive health.

Download Parva and start building your cognitive baseline from the way you work every day. Insights begin on day one.

Start Getting Care Get Started
macOS 13 Ventura or later · Free to begin · No subscription