Now shipping

Feeltherhythmofyou.

Know your heart, breath, and focus in real time. A chest-worn wearable built for minds that race, so you can finally hear what your body has been saying.

Live
ARCBEAT • CH01
Heart rate
72bpm
HRV
68ms
live
Stress
24%
live
Focus
86
live
The product

Every signal your body sends,
finally readable.

bpm

Real-time heart

Raw PPG samples from a chest-worn sensor stream into a clinical signal pipeline, every beat.

hrv

HRV breakdown

RMSSD, SDNN, pNN50, LF/HF power, and Poincare nonlinear analysis computed live.

86
stress

Stress index

Baevsky stress index and composite autonomic state derived from your heartbeat patterns.

breath

Breathing biofeedback

Estimated respiratory rate from PPG modulations. Haptic cues planned for next firmware revision.

Calm
Alert
Drained
Anxious
Nervous system

Know your nervous system.

ArcBeat maps your autonomic state into a parasympathetic-vs-sympathetic plot so you can see where you actually are, not where you think you are.

86
Focus
HRV

Heart-rate variability, deeply.

Time-domain (RMSSD, SDNN, pNN50), frequency-domain (LF/HF via Welch PSD), and nonlinear (Poincare SD1/SD2) all computed live from raw RR intervals.

Inhale · Hold · Exhale
Breath

Breathe with your body.

Respiratory rate is estimated from PPG amplitude and frequency modulation. Closed-loop biofeedback is on the roadmap.

Science

Clinically grounded,
consumer simple.

Every metric ArcBeat surfaces maps back to peer-reviewed literature. The signal pipeline is built from published algorithms, not proprietary black boxes.

HRV standards
Task Force ESC, 1996
Health & HRV
Shaffer & Ginsberg, 2017
Vagal tone & emotion
Laborde et al., 2017
Autonomic balance
Baevsky, 2002
FAQ

Good questions,
real answers.

ArcBeat is a small wearable that sits on your finger or chest. We are iterating on form factor with early users.

Your body is talking.
Start listening.

Built by people who needed this first.

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