Trajectories between visits — now visible.
Between sessions, patients carry how they sleep, how much energy they have, how symptoms develop. The practice typically only sees the snapshot on appointment day. With the Centi · Elara integration that turns into a trajectory — controlled, aggregated, revocable at any time.
The appointment is over, the patient goes home. What happens over the next weeks — how sleep reacts, whether exhaustion tips over, how PEM episodes distribute — falls between the chairs. At the next appointment it gets reconstructed. Rarely precisely, often with gaps.
The Elara app is the tracker patients use to close that gap. Centi-Health shows the trajectories aggregated inside the patient record — without any raw data or diary entries being exposed anywhere.
Calm panels. No diary entries.
Inside the patient record the trajectories appear as calm, aggregated panels — no micro-logging, no diary entries, no raw data. The question stays clinical: how does sleep develop over four weeks? When do PEM episodes cluster? What does the patient do between visits?
Sleep
Sleep duration, wake phases and quality — aggregated over weeks, not nights.
Energy
Self-reported energy across the day, smoothed into a trend curve.
Vitals
Heart rate, HRV and activity from the wearable — as a time series per marker.
Symptoms
Symptom trajectories without diary entries — frequency, intensity, clusters over time.
PEM
Post-exertional malaise episodes: distribution, trigger heuristics, recovery duration.
Each area is a separate decision by the patient — what is not released will not appear inside the practice.
The connection forms only when the patient actively allows it.
The connection forms exclusively when the patient actively enters the code from the practice. After that, inside the Elara app, they pick which areas to share. This decision is not final — every area can be withdrawn at any time.
If the connection is revoked later, the aggregated data disappears from the Centi-Health record. No shadow remains — no "last state" archived by the practice.
Not more data — but the right data, at the right time, with explicit consent.
Three steps. Data only flows after the third.
The first step happens in the practice, the other two inside the patient’s Elara app. Nothing flows before.
Fig. 01Connection code inside the practice environment — six digits, valid for 30 days.
Generate a code inside Centi-Health
Generate a 6-digit connection code inside the patient record. Valid for 30 days. Hand off verbally or by email from the practice environment.
Enter the code inside the Elara app
The patient installs the Elara app and enters the code during onboarding. Only then is a connection established — no data flows before.
Release areas deliberately
A separate decision per area (sleep, energy, vitals, symptoms, PEM) inside the app. What is not released, the practice does not see.
Four commitments. No small print.
EU hosting
Centi-Health and Elara store on EU infrastructure, GDPR-compliant.
No data flow without code entry
The code alone connects nothing — only active entry inside the Elara app establishes the link.
Aggregated, not raw
The practice sees summarized trajectories. Diary entries, notes, detail triggers stay inside the app.
Revocation takes effect immediately
If an area or the entire connection is revoked, the aggregated data vanishes from the patient record.
Four questions. Briefly answered.
Where is the data stored?
Both Centi-Health and Elara store exclusively on EU infrastructure, GDPR-compliant. No data transfer to third countries.
What does the practice see, and what does it not see?
The practice sees aggregated trajectories per area. Diary entries, notes and raw data stay exclusively inside the patient app.
Who decides which data is shared?
The patient. A separate decision per area (sleep, energy, vitals, symptoms, PEM) inside the Elara app. Without code entry no data flows.
How does revocation work?
Revocation takes effect immediately. If an area or the whole connection is revoked, the aggregated data disappears from the Centi-Health patient record at once.
Two paths — depending on side.
Use Centi-Health
Lab dashboard for naturopaths and integrative practices. Three reports free to try.
Download the Elara app
Tracker for sleep, energy, vitals, symptoms and PEM — free, no account at Centi required.
Jointly written by Elara Health and Centi-Health. Connection code and per-area release are part of the Centi · Elara integration, introduced in May 2026.