Your Lightstone, reborn in the browser.
Live heart rate variability and skin conductance biofeedback, an athlete dashboard, and breath-paced biofeedback games. No drivers, no installs: plug the Lightstone into a Mac or PC and open Chrome or Edge.
The games
Heart biofeedback and heart + skin biofeedback games, each with its own breath pacer and levels.
Everything the Lightstone can measure, finally put to work.
The Lightstone’s three finger sensors read your pulse and your skin conductance. The dashboard reads its raw signal directly, detects every heartbeat, and turns it into research-grade HRV and arousal measures.
Raw pulse waveform
The optical finger sensor (PPG) is sampled about 30 times a second; every heartbeat is detected and timed.
Beat-to-beat analysis
rMSSD, SDNN, pNN50, SD1/SD2, LF/HF power, coherence, sample entropy and DFA α1, from every interval.
Skin conductance (SCL)
Two skin sensors track sweat-driven arousal: the fast, honest signal of stress and calm.
Drivers to install
Connects straight from Chrome or Edge on Mac and PC (WebHID). Open the page, plug in, pick the device.
Developers: the Lightstone’s USB protocol is documented by the open-source liblightstone library.
Live sessions and biofeedback games
Two ways to train. Live sessions give coaches and clinicians the full picture in real time; the games turn the same signals into play that athletes want to come back to.
See the nervous system as it happens
- Live heart rate, beat intervals, pulse waveform and skin conductance
- A breathing pacer to find each athlete’s resonance pace
- Live Heart–Mind Alignment blob and coherence
- Record with one click; every session is saved with full HRV analysis
Intelligent breath pacers, gamified Poincaré
- Breath pacers that adapt to the athlete: deeper breaths as they master each level
- Levels built on the Poincaré plot at lags 1 to 10: the heart’s rhythm becomes the game
- rMSSD targets, pit stops and recharges that train real vagal power
- Every run is recorded as a session with full analysis and a leaderboard
An athlete dashboard that tells the story
Every session builds each athlete’s own normal. Trends across days, weeks and years, plain-language readouts, and check-in alerts when something is off.
- Live playback of every recording: watch the heart, the breath and the signals replay second by second
- Readouts that compare each session with the athlete’s own normal, with coaching suggestions
- Rolling rMSSD, LF and HF power, SD1/SD2 and more across any session
- PDF reports and CSV exports in one click
Replay any session
Press play and the session comes back to life: the beating heart, the heart rate, the pulse and skin conductance, the pacer and every event, in real time or sped up. Add notes pinned to the moment they happened.
The blob
One living shape that sums up a session. Its outline is the Poincaré plot of the heartbeats; its color and score blend HRV, heart rate, rhythm quality and skin conductance. Athletes understand it instantly: bigger, smoother and brighter is better.
- A score from 1 to 10 with a plain-language reason
- Shown live during sessions and replayed afterwards
Bring your history with you
Drop your Kubios folder. Bulk-import years of recordings in one go: session CSV files and RR interval files (the kind Kubios exports) are read straight in the browser and analyzed with the same HRV engine as live sessions.
Bulk upload
Drag a whole folder onto the window; hundreds of sessions import in one pass.
CSV and Kubios RR
Session CSVs and RR interval exports, in seconds or milliseconds.
Private by design
Files are read and analyzed on your own computer; only the results are saved to your account.
From The Journey to Wild Divine to today
The Lightstone became a beloved biofeedback sensor through The Journey to Wild Divine: The Passage, the meditation and biofeedback adventure where breath and calm opened the way forward. Thousands of Lightstones are still in drawers and on desks, but the original software has aged. The KörperForce HRV Dashboard gives them new life on modern Macs and PCs: the same finger sensors, now with modern HRV science, an athlete dashboard and new games.
Start with one free account and Zen Drive
Plug in your Lightstone, open Chrome, and breathe.
HRV Dashboard
Sessions
| Check | Date | Time | Session | Length | HR | Min HR | rMSSD | SDNN | LF/HF | Peak Hz | Smoothness | Corrected |
|---|
Account settings
- Signed in as
- –
- Account type
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- Plan
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- Athletes
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Subscription
Online payments are coming soon. To upgrade now, contact KörperForce and your plan will be switched on for you.