Hydrogen

Hydrogen

Your fatigue and focus data, asked in plain English — powered by Sarenica.

From signals to evidence

See how Hydrogen reasons

Watch how Sarenica turns desktop, phone, and wearable signals into questions, methods, and honest findings.

Open Hydrogen
Desktop + phone + wearablesHypothesis testingConfidence-aware findings
Hydrogen

Built for real desk work.

Hydrogen reads sessions, fatigue load, focus blocks, and wearable joins together — so the answer points at what actually shifted in your week, not a generic productivity score.

Compare my last 14 days to the previous 14.
Strongest shift: the 14:00 fatigue dip got 22% deeper. Best block moved from 09:45 to 10:30. Tracked coverage held at 84% across both windows.
Based on 19 reliable session days · sample data
Ask Hydrogen anything
Hydrogen
Hydrogen answering a baseline-grounded question inside the Sarenica app
Inside the app

Ask. Compare. Decide.

Hydrogen sits inside the Windows app next to your data. Every answer cites the sessions and windows it used, so you can verify the read.

The same agent across your reports.

Daily, weekly, or one-off questions — Hydrogen reads from the same baseline. The answer is consistent across surfaces because it is computed from the same sessions.

Daily check-in

Short read after each tracked day. One thing that worked, one thing to try tomorrow.

Weekly comparison

This week vs last. What shifted, what survived, where coverage was honest.

Custom questions

Compare arbitrary windows. Ask about a single signal. Audit a hypothesis.

Hydrogen does not invent a story about your week. It points at the signals that already changed.

How it works

Your model, up close.

The links your own data actually supports — what helps, what hurts, and how sure we are. Tap any node to see the evidence behind it. Switch to Timeline to read your day forward, evening into tomorrow.

Supported Testing now Worth a try hurts helps▸ arrows run forward in time
What’s associated with your
Behaviors you can change
Context & environment
Sleep
2 stable · 6 links
Supported Testing Worth a trynot a causal diagram — associations in your data
Selected relationship

Evening screen ↔ Sleep

When evening screen went up, sleep tended to move oppositely. An association, not evidence that one caused the other.

Worth a try · inverse−0.16
observed |r| 0.16current floor 0.37
Confirmability gap: this estimate is below what your data can yet reliably distinguish. More days may narrow it — but can’t guarantee confirmation.
ReliabilityLow
Uncertainty interval−0.36 to −0.00
Design a testSee the data
01
Grounded in your data

Every answer cites the sessions, weeks, or signals it used. No vague generalities, no advice scraped from elsewhere.

02
Honest about coverage

If a window has too little tracked data, Hydrogen says so before answering. No false confidence.

03
Tuned for desk work

Reads sessions, fatigue, focus, posture, and wearable joins together. Not a generic productivity bot.

Start using Hydrogen

Install Sarenica. Track a few real days. Ask your data.