Sarenica Desktop
Six built-in detectors that watch your fatigue, focus, and posture — locally, on your own machine.
Every block, every signal — one read.
Each bubble is one work session. Bigger means longer. Higher means more tired. Color shows your output while active. One chart, every signal layered together — built from your real days.
How each detector works
Every signal, while you work.
Fatigue state, typing speed, idle stretches, session length — all updated live as the detectors sample. The attention trend tracks the curve of your block; face detection confirms the camera-based signals are honest.
The hours that matter, with confidence.
Fatigue score by hour, risk probability layered on top, and an explicit confidence band so you know when the read is honest. Hover any hour to see the signal minutes that fed the call.
Catches the dip you would miss.
PERCLOS — percentage of eyelid closure over a moving window — is the strongest in-the-moment drowsiness signal. The chart marks every spike so you can see exactly when the day started costing you.
Down to the keystroke, the click, the pause.
Every detector has its own deep view. Typing tracks speed, intensity, and error rate. Mouse tracks clicks, distance, peak speed, and idle stretches. Drill in whenever a weekly read flags an unusual shift.
Six detectors. One baseline.
Each signal is computed independently, but read together. That is what lets Hydrogen say which one actually moved when your week changed.
Sustained-attention sessions. When did you actually settle in, and for how long.
Cumulative strain across the day. The dip that builds before you notice it.
Head pose and shoulder line, sampled passively. No video stored.
Blink rate, eyes-closed events, and microsleeps from camera frames.
How your typing rhythm changes through the day. A subtle fatigue tell.
The pauses that mean a break, and the ones that mean drift.
Optional context, never required.
Connect a wearable and Sarenica reads sleep, recovery, and HRV alongside your desktop signals. The desktop tracker keeps working without one — the wearable just sharpens the read.
Sleep stages, resting HR, activity rings.
Sleep score, readiness, body temperature.
Connections happen on the device. Wearable data is stored alongside your desktop signals in your local database and used for Hydrogen analysis — never pooled, never sold.
You hold the keys.
Every detector — camera, keyboard, mouse — has an explicit toggle. Counts and speed only; no keystrokes, no screen content, no video stored. Turn anything off and the rest keeps working.
Your data never leaves your machine unless you ask it to.
Every signal is computed on your machine. Sync is opt-in. The app works without an account.
Native .NET MAUI binary. Idles at low CPU. No Electron, no bundled Chromium.
Distributed through the Microsoft Store with code signing and automatic updates.
Install on Windows in under a minute.
Then ask Hydrogen once you have a few real working days tracked.