I am in crisis
Your step-by-step plan, your pain logged, and you choose who to alert: your loved ones, your doctor, 144.
Android app
The Android app and its wearable versions.
Your health within reach, even without network.
Android 9 or newer. Version 0.81.0. Scan the QR code to open this page on your phone. On iPhone, Trévor opens in Telegram.
Trévor stays free thanks to your gifts: see the support campaign →
See the screenshots
Renderings of the app's real screens, in French, with a fictitious patient. The phone and foldable ones are regenerated with each version.
- Widgets on your home screenFive widgets you resize: Emergency, Today with up to eight appointments, My care plan, Daily rings and My medicines.
- The essentials without networkYour emergency card stays with you, even without network.
- With your connected watchTrévor sees the bad days coming thanks to your measurements. The app passes them on.
- Drépaquoi and DrépanewsReliable answers to your questions, and the latest research news.
- Also on your Wear OS watchThe crisis button and your seven-day oxygen chart, on your wrist.
- Hands-free and earbudsYour summary and emergency card are read to you in your earbuds, after “Hello Trévor!”.
- Smart glasses (Android XR)Your day right in front of your eyes: your risk, your route, your emergency card, without taking out your phone.
Get started in 4 steps.
See the 4 installation steps
Install the APK
Tap Download the Android App, open the file, then allow installation from your browser (or Files) when Android asks. Tap Install, then Open.
Why Android warns you
The app is not distributed through the Play Store, so Android shows one or two cautionary messages. That is normal. It is developed by Coach Drépano (HES-SO Geneva, with HUG), shows no advertising and sends your measurements to your own Trévor server, in Switzerland.
If Android asks Keep anyway?, confirm. If Play Protect offers to scan the app, let it, then tap Install anyway.
Read and accept “Before you start”
On first opening, the app shows Before you start: read this short text, then accept to continue. You can read it again at any time on the page Data protection.
Link to Trévor
In the app, tap Open Trévor and get my address: Telegram opens on Trévor, which sends you your address. Tap Open the app and link: the app comes back with your address already filled in, nothing to copy. Then allow Health Connect by ticking every option offered.
The quickest way, and if it gets stuck
From Trévor you can also type /lier_app (or open My watch / my ring, then Link the Android app): Trévor sends you the address and the same button.
Health Connect is the Android health vault where your watch keeps its measurements. It is already there on Android 14 or newer; otherwise, install it once from the Play Store.
If the app says Trévor refused the upload, type /adresse in Trévor: you get a fresh address to paste in place of the old one.
Allow background upload, then add the widgets
Tap 🔋 Allow background upload and answer Authorise: without this setting, essential on Samsung, uploads can stop for hours. Then long-press your home screen, choose Widgets and add Coach Drépano: emergency or Coach Drépano: today.
If you decline, and about the widgets
Your measurements still go out each time you open the app (“Send now” button). You can allow it later with the button, or in Settings, Apps, Coach Drépano, Battery, Unrestricted.
The “emergency” widget gives the crisis screen, the emergency call and the card in one tap. The “today” widget shows the day's risk (experimental estimate), treatments, up to eight appointments depending on its height and water with “+1 glass”.
Inside the app.
See what is inside the app
Nine tiles on the home screen, and a side menu for the rest.
Your emergency card
In French or English in one tap, with an emergency summary, readable without network.
Medical record
Your summary, your results with their trend, your vaccines and your care team's messages.
Journal and daily tracking
Your mood, your goals, your oxygen and sleep charts, one day at a time.
My medicines
Your stock, your prescriptions and your combined order, with one email per pharmacy, after a preview.
Challenges
A challenge, games and points to learn by playing. Never any money.
Travel
A destination guide, hospitals, pharmacies and the translation of your treatments.
My care network
Your care directory, your appointments with a reminder, your relatives, your buddy and the My follow-up review, with a call in one tap.
Community
Meet-ups, workshops and live sessions, on a page of their own.
Settings
Language, notifications, oxygen threshold. Your shared location is off by default.
Offline
Your notes are kept then sent when the network returns, and a crisis can go out by SMS.
In the side menu
Appointments with addresses, useful places, information sheets, widgets and the SOS button.
On your Wear OS watch.
See the watch app's features
A standalone app for your Wear OS watch (Samsung Galaxy Watch, Pixel Watch…), with the I am in crisisbutton, your treatments, water, mood with a face, pain and circle. You see youroxygen and pulse chart over seven days, a full-screen warning if your oxygen is low, a walking goal that fits you and a “To do” list with your care team's messages. Two tiles can be added to the carousel: Today (crisis risk, today's form, treatments, next appointment) and My card (your emergency card, readable without network).
Your data stay yours.
See how your data is handled
Your crisis risk, calculated on your phone. The app calculates it itself, even without network. With the Keep my measurements on this phoneoption, your measurements never leave it: only the model is downloaded. It is an experimental estimate: a low score never rules out a crisis.
The app reads only the measurements you allow in Health Connect and sends them to your Trévor server, in Switzerland, except in local mode. To answer your questions, Trévor may pass a summary of them, without your first name, to Claude (Anthropic, United States). Nothing is sold, no advertising. You can withdraw access whenever you like, or erase everything with /supprimer in Trévor.
Travel guide, the translation of your treatments and the reading of your prescriptions go through the AI assistant (Anthropic): you are warned before anything is sent, and Trévor adds neither your name nor your ID. Your location is never kept: it goes out with a crisis alert only if you allow it, every time.