Sarenica for Android
Your honest personal scientist, in your pocket. Sleep, screen time, and focus — turned into findings you can actually trust.
Everything your phone already knows — read honestly.
No wearable required to start. Add one and it only gets sharper.
Your phone, read honestly
Screen time and which apps actually eat your evening, collected automatically — no manual logging.
Sleep from any wearable
Health Connect brings in sleep, HRV, resting heart rate, and steps. No second account, no extra login.
Quiet context signals
On Samsung, ambient light, charging rhythm, and phone motion are sampled without a single extra permission.
Ten-second check-ins
A couple of taps for mood, energy, or stress — only when it helps answer a question about you.
Weather-aware
Findings account for the day's weather, so a rough night isn't blamed on the wrong thing.
Real experiments, not guesses
Opt-in randomized nudges test whether a change actually helps you — some evenings on, some off, then an honest answer.
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.
Evening screen ↔ Sleep
When evening screen went up, sleep tended to move oppositely. An association, not evidence that one caused the other.
Private by default
Findings are computed on your device. Raw data stays on your phone unless you explicitly turn on research sharing.
One question. One honest finding.
Every result says “association, not proof”, shows how sure it is, and tells you when it needs more data.
Signed on your device
Each finding and experiment carries a cryptographic receipt — you can always check where a result came from.
One question. One honest finding.
Start with your phone. Ask what's really affecting your sleep, focus, or energy — and get an answer that admits what it doesn't know.