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Built for continuity. Not episodes.

Every doctor
you meet starts
from zero.
Not anymore.

Not a portal. Not a PDF you lose. Not a verbal catch-up that misses everything. SinceWhen is the living thread that follows you from your first breath — every diagnosis, medication, lab result, and mental health note, structured and remembered forever. One QR code. Any doctor. Your full story.

37% Better diagnosis
24% Fewer readmissions
Times you've restarted
0 Existing alternatives
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Medicine is practiced in episodes.
You are not an episode.

The problem

Your medical story
has never had
a single narrator.

Every hospital, every GP, every specialist holds a fragment. None of them talk to each other. The system was designed around episodes — not people. When you can't advocate for yourself — unconscious in an emergency, in the fog of a crisis — someone is making life-altering decisions with a tenth of the picture.

01
Emergency room — unconscious patient
The ER doctor has no idea about your penicillin allergy, the blood thinner you take daily, or the cardiac event at 14.
02
New neurologist, new city
You try to reconstruct 30 years of migraine history in 12 minutes. You forget the medication that worked in 2009. She prescribes it again.
03
A child who cannot tell their own story
Born with a condition, passed between pediatricians for years. No doctor has ever seen the whole arc.
~19

The average person sees 19 different healthcare providers in their lifetime — each starting from near zero. History fractures into silos that never reconnect.

46s

Average verbal recap before a first consultation. Not a records review — a catch-up that misses allergy flags, medication history, and anything from more than two years ago. SinceWhen builds the complete brief before the doctor walks in.

0

Zero existing services follow a human being from birth to end of life across medical, psychological, and pharmaceutical history. Until now.

Silent demo

Three moments.
One thread.

sincewhen://emergency — QR scan authenticated — read only
Emergency mode active
Kwame Asante
DOB09 / 11 / 1979 · Age 46
BloodO+
AllergiesCodeine · Sulfonamides
CriticalSickle cell trait — carrier · Anticoagulant ongoing
GPDr. Okonkwo · Lambeth Walk Surgery, London
Lifetime timeline
1986
Sickle cell trait confirmed
Korle Bu Teaching Hospital, Accra
2001
Relocated UK — NHS registration
Records partially transferred · gaps flagged
2014
DVT — left leg
Rivaroxaban started · Haematology ongoing
2021
Hypertensive crisis
Amlodipine 10mg · BP controlled
2026
Haematology review — 3 weeks ago
Stable · next follow-up Aug 2026
A doctor who has never met Kwame makes the right call — because SinceWhen was there first.
sincewhen://specialist — rheumatology referral — Dr. Tan Wei Lin — first consult · Priya Nair
AI context brief — generated for this appointment
Priya Nair, 38F, Singapore. Presents with a 9-year history of migratory joint pain and morning stiffness. Prior diagnoses include reactive arthritis (2017, Dr. Rajendran, Chennai) and undifferentiated connective tissue disorder (2021, unconfirmed, SGH). Two NSAID courses abandoned due to GI intolerance. Family history: maternal aunt — ankylosing spondylitis; father — T2DM. Psychological: GAD documented 2022–2024. No HLA-B27 panel on file. Patient relocated from India in 2019 — pre-2019 records partially digitised via SinceWhen upload.
Pattern 3/3 match
Flares correlate with documented stress peaks
Risk flag
GI sensitivity — NSAIDs contraindicated. Two prior courses abandoned.
Family history Relevant
Maternal aunt — ankylosing spondylitis · Father — T2DM
?
Record gap
HLA-B27 panel — never ordered · pre-2019 records partial
The first appointment. Dr. Tan already knows Priya's full story — including the decade spent in two different health systems.
sincewhen://new-life — day 1 entry — parent access · Amsterdam UMC
May 31, 2026 · 02:44 AM · Amsterdam UMC
Amara Osei-Bonsu
Birth weight3.51 kg · 62nd percentile
APGAR8/10 at 1 min · 10/10 at 5 min
DeliveryC-section · maternal positioning
Mother — originGhanaian · Sickle cell carrier (AS)
Father — originGhanaian · Sickle cell carrier (AS)
Sickle cell risk25% SS probability — screen ordered
Thread status● Active · Lifetime record started
Amara is 2 hours old. A critical genetic flag is already in her record — the first of a lifetime of care.

How it works

A faithful agent.
A lifetime companion.

Step 01

Starts at birth. Or today.

Open a thread at birth — or backfill your history now. SinceWhen accepts documents, voice notes, prescription photos, lab results, discharge summaries. It reads everything, structures it, remembers it permanently.

Step 02

Grows silently with you.

Every visit, result, medication change — added in seconds. The AI finds patterns across decades, flags changes over time, and builds a living synthesis that deepens as your life unfolds.

Step 03

Yours alone. Until you say otherwise.

Emergency QR code, time-limited specialist link, or full GP export. You control who sees what and for how long. No human at SinceWhen can access your records. End-to-end encrypted. No defaults. No surprises.

Scientific foundation

Not a hunch.
Evidence.

"Increased continuity of care is associated with lower mortality rates, decreased hospital admissions, and reduced healthcare costs."

British Medical Journal · Continuity of Care & Patient Outcomes · Longitudinal cohort study

"Patients with comprehensive longitudinal records encounter 24% fewer hospital readmissions compared to those without such access."

Journal of the American Medical Informatics Association · JAMIA · 2024

"Complete medical histories improve diagnostic accuracy by 37% — the highest-impact variable in first-consultation outcomes."

Journal of Medical Systems · EHR Completeness & Clinical Decision Quality

"Patient-held records provide continuity and patient involvement — critical in complex multi-provider journeys where gaps are most costly."

King's College London · Systematic Review, Health Expectations, 2007

"Continuity is linked to better chronic condition management, improved medication adherence, and increased trust in providers."

Journal of General Internal Medicine · Chronic Disease Management & Continuity

"Patient-reported continuity — the experience of being known by the system — is a marker of healthcare quality in its own right."

University of Manchester · BMC Primary Care · Burch et al., 2024

Who it's for

Every human being.
Starting with you.

New parents

Start your child's thread from birth. Every vaccination, every milestone, every allergy. By adulthood, their history is already written — and waiting for them.

Chronic condition patients

Managing diabetes, autoimmune conditions, or mental health across dozens of providers. SinceWhen holds the thread so you don't have to.

Travelers & expats

Medical care in a foreign country, a language barrier, a system that doesn't know you. One QR code — any doctor has everything they need.

Physicians & specialists

Not another incomplete referral. The complete record — structured, searchable, ready before you walk in. Spend your consultation on clinical decisions, not reconstruction.

Elderly patients & caregivers

Not a care plan. A lifetime record that outlasts any caregiver. The complete story is always there — even when the person can no longer tell it themselves.

Mental health journeys

Not a mood tracker. The complete psychological arc — medications, therapy notes, mood patterns across decades — held as faithfully as the physical record.

[ Join the movement ]

The first generation
that never starts
from zero.

SinceWhen is in private beta. Join the waitlist and be among the first to start your thread — and give one to someone you love.

HIPAA-aligned End-to-end encrypted You own your data SOC 2 Type II in progress No data sold. Ever.