Grounded in 250M+ peer-reviewed papersSee how →
Reads your 360° health data. Cites real evidence. Remembers what matters.
Cited evidenceNEJM · 2024
DOI 10.1056/NEJMoa2401789
Steps8,247
Sleep7.4 h
BP120/80
Remembered“Your ferritin was 18 ng/mL — time to re-test.”
from 3 months ago
ReasoningGrounded in
Clinician? Get the professional version at
pro.yesilhealth.comProSee it in action
One health AI that connects every program, every lab result, every symptom — and turns it into a daily plan you can actually follow.
01Tell your AI coach what matters — sleep deeper, lose weight, lower stress. It builds a daily plan and adapts as you progress.
0225 programs plus Apple Health and Google Health Connect in one dashboard. Log a meal in a single sentence — macros calculated in seconds.
03Sees every program, every lab result and every saved memory — and adjusts your targets, challenges and daily plan. Not just answers.
Just talk. Ask a question and get a real answer — not a generic search result. Every important recommendation links to its source, and when the evidence is weak, the app says so.
250M+ research papers
Every indexed peer-reviewed article
Every FDA drug label
Approved monographs and safety data
All registered trials
Every NCT-registered clinical study
Every program shows a clean progress ring, a baseline-shift chart and AI insights you can act on. Pick what matters to you.
Steps
Activity
RecoverySleep
Hydration
Nutrition
Weight
Mood
Meditation
Symptoms
Social
Outdoor Time
Learning
Work Breaks
Medication
Vitals
Quit
Skincare
Oral CareBlood Pressure
Blood Sugar
Cholesterol
Lab Results
Gut Health
ReproductiveScience-backed micro-actions tied to your programs — “8-hour sleep window”, “no added sugar”, “evening walk”. The AI watches your patterns and adapts the plan daily.
No tedious food databases. Take a photo or type one sentence — “chicken salad for lunch” — and the AI calculates calories and macros in seconds.
Paste your chat history from any AI. Yesil keeps only the health signals — and turns them into persistent memory.
ChatGPT
Claude
Gemini
Perplexity
Health-relevant signals only
Yesil Memory™Hypertension, diabetes, thyroid — long-term tracking, medication adherence and trend-aware nudges.
Tired all the time? See what your sleep, mood and recovery data actually say — and what to change first.
Recovery scores, HRV, sleep windows and load — synced from your wearable, interpreted in context.
Upload labs, see what's actually outside range, and get evidence-based next steps — with citations.
“It flagged my low ferritin three months before my GP would have. Every answer cites its source — that's what made me trust it.”
Maya
Runner · Singapore
“I walk into the visit already knowing what they've been tracking. Saves me 15 minutes and we focus on the right things.”
Dr. K.
Family physician · Berlin
“Dropped the API into our app in a weekend. Cited evidence on every response was the unlock for our compliance team.”
Daniel
CTO · health-tech startup · Boston
Trusted by clinicians, developers and consumers
One engine, three audiences. Same evidence — cited, calibrated and ingested daily.
20+ companies already shipping with the engineLicense Yesil Health Intelligence — the same evidence-grounded engine that powers the Yesil App and Yesil for Clinicians. 250M+ peer-reviewed papers, every FDA label, every registered trial. Cited on every response.
API access opens this quarter. Docs follow shortly after.
const stream = await yesil.chat.stream({question: "Should I take vitamin D this winter?",demographics: { age: 38, sex: "f" },health_context: "25(OH)D 18 ng/mL · 6.2 h sleep…",}); // SSE: token · citation · memory_extracted · donefor await (const e of stream) {if (e.type === "citation") {// { source: "NEJM", doi: "10.1056/…" }}}A professional view of the same engine for your clinical practice. Sign in at pro.yesilhealth.com and start your first consult in seconds.
Yesil for Clinicians launches this quarter.
Informational support for clinical workflows. Not a medical device.
Health data is sensitive. We treat it that way — by default.
Your data is encrypted in transit and at rest, on managed infrastructure with role-based access.
We don't sell your data and don't train third-party foundation models on it without your permission.
Review and delete your memories, chats and account anytime. Sign in with Apple supported.
Keep tracking your programs for free. Unlock the full AI with a 3-day trial — no auto-charge surprises.
For staying on track
No. Yesil gives you educational, evidence-based health information and helps you track and understand your habits. It does not diagnose, prescribe, or replace professional medical care. Always consult a qualified clinician for medical decisions.
Important recommendations cite their sources — peer-reviewed papers from the entire indexed medical literature (250M+ articles), FDA drug data, and every registered clinical trial. When the evidence is weak or mixed, the app tells you so instead of guessing.
Your health data is encrypted in transit and at rest. We don't sell it, and we don't train third-party foundation models on it without your permission. Sign in with Apple is supported.
Yesil Health runs on iOS and Android, syncs with Apple Health, Google Health Connect and Bluetooth devices, and speaks 9 languages: English, Türkçe, Español, Deutsch, Français, 日本語, 한국어, العربية and 中文.
Yesil is a mobile app for everyone — we don't have a consumer web app right now, so your phone is the AI. The web product at pro.yesilhealth.com is designed for clinicians: a professional view of the same engine for reviewing patient-shared data, querying the evidence engine, and generating visit-ready summaries.
Yes. Start with a free trial — no auto-charge surprises. You can cancel before it ends and keep using the free program tracking.
The same engine clinicians use, now in your pocket. Free to start.