Years of tests, several specialists, no clear cause — and the only treatment on offer is painkillers. What works for me takes the opposite approach: instead of matching your symptoms to a known disease, it investigates your body, connecting hundreds of signals day after day to surface the patterns. Then you test these routines, to see whether the pain truly goes away every time.
Correlation is not causation. W is a tool for surfacing correlations: it asserts no causation and makes no diagnosis.
Request accessThree steps. No forms, no medical jargon, no effort.
Describe the pain in your own words — where it is, how strong, when it changes — plus sleep, food, stress, the weather, what you took and when. Photograph a scan or a lab result.
Link the apps you already use — sleep, steps, weather, calendar, cycle, any health app. It pulls in hundreds of signals a day and structures them cleanly, in any language.
It weighs everything at once against medical knowledge and your own history, surfacing the multi-factor patterns behind your pain — and citing the sources it relied on.
An early look at What works for me.
Speak freely: where it hurts, how much, what changed, what you took. It even picks up when your voice sounds strained and checks in — then files every detail as clean data, and follows up on what you forgot to mention.
Ask it to dig, or explore the correlations yourself. When hundreds of small signals line up, you'll see what your flares follow — every factor weighed at once and ranked by how strongly it explains the pain.
A living journal of your body — searchable and connected, pulling spoken notes and synced data into one thread: pain intensity, triggers, sleep, medication. Scroll back through weeks and months; nothing you noticed ever gets lost again.
Pain, sleep, weather, stress, activity and medication — tracked over time so the connections become impossible to miss. The big picture of what drives your pain, drawn from every source at once.
Health data is the most sensitive data there is — a "special category" under the GDPR (Art. 9). We treat it that way: built for strict compliance with European and French law, by design, and engineered to go further than the law requires.
We collect only what a finding actually needs, and pseudonymise it the moment it arrives. Analysis runs on de-identified data — and only ever with your explicit, opt-in consent, which you can withdraw at any time.
Your entries are kept for you to use, then — after three years — we tell you a month ahead and let you keep or delete them. Or opt in, once, to keep everything for as long as you want it.
Every byte moves over TLS 1.3 and rests under AES-256. Pseudonymisation and encryption are applied by default — exactly the technical measures the law names for securing processing.
AES-256-GCM at rest, with per-user keys held apart from the data they protect and rotated on a schedule. Confidentiality, integrity, availability and resilience are tested continuously.
Your data stays in the EU, on infrastructure built to the HDS standard (Hébergeur de Données de Santé) required for hosting French health data — an ISO 27001-based framework overseen by the Agence du Numérique en Santé.
Access, correct, export in a portable format (any date range, your physical, psychological and context data), or erase everything — one tap, honoured without undue delay. And we run a Data Protection Impact Assessment before we ever launch.
Premium membership, by invitation. Tell us a little about your situation and we'll be in touch — including about human support where it's available.