open-chart
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Private by design — encrypted in your browser, readable only by you

Make sense of a lifetime of medical records.

Your health story is scattered across portals, PDFs, and doctors who never see the whole picture. open-chart pulls it all together — your results trend across years, an AI reads the whole chart to find the patterns, and a chat answers your questions so you walk into every appointment prepared.

Create your accountTry it free: 3 documents analyzed, a full AI chart review, and 5 questions to Remi — no card needed.

See what it finds

One review reads your whole chart — and connects signals no single visit would.

These are the kinds of things open-chart surfaces: a pattern stitched together across different labs, different years, your visit notes — even your medication list — with the questions worth bringing to your doctor.

HighCross-signal

Your TSH, cholesterol, and fatigue have all drifted together since 2023 — could an underactive thyroid tie them together?

Three threads point the same way. TSH rose from 2.1 to 6.8 mIU/L across three panels (now above range) while free T4 slipped to the low-normal edge. Over the same window LDL climbed from 104 to 141 mg/dL with no diet change noted, and a March 2026 visit note records new fatigue and cold intolerance. An underactive thyroid is a well-known driver of high cholesterol — but no thyroid follow-up appears anywhere in the chart.

Worth asking your doctor
  • Whether TSH should be rechecked with thyroid antibodies (TPO).
  • Whether treating the thyroid first could lower the cholesterol — before starting a statin.
  • Whether the new fatigue and cold intolerance fit the same picture.
TSHref 0.4–4.0
20232026
LDL cholesterolref ≤100
20232026
Free T4ref 0.8–1.8
20232026
Grounded in your records
Thyroid panel — 2026Lipid panel — 2026Comprehensive metabolic panel — 2025Office visit summary — Mar 2026
Also grounded in 3 recommendations, 11 observations.

Illustrative examples — not real patients, and not medical advice. Your records stay encrypted and private to you.

What you get

The whole picture your records have been hiding.

Years of results, on one timeline

Upload labs from every provider you've ever seen. open-chart extracts each value — HbA1c, cholesterol, blood pressure, vitamin D — and plots it across years with reference ranges, deduped across labs. See where you're heading, not just today's snapshot.

AI that reads your whole chart at once

No single doctor sees everything you do. An AI reads across all of it — labs, notes, medications, conditions — connects the patterns, and surfaces what's changed and what's worth following up on. The big picture your scattered PDFs couldn't show.

Walk into appointments prepared

Ask Remi, your assistant, plain-English questions about your own records — “what were my last three A1c results?”, “what should I raise about my thyroid?” Every answer is grounded in your data, with a focused list of questions to bring to your doctor.

open-chart helps you understand your records and prepare for your doctor — it doesn’t give medical advice or replace a clinician. Remi is an assistant, not a physician.

How it works

From a pile of PDFs to a clear picture.

  1. 1

    Upload everything

    Drop in lab PDFs, imaging reports, and discharge notes from every portal and provider. Each file is encrypted in your browser before it uploads — we only ever store sealed blobs we can't open.

  2. 2

    Watch it come together

    open-chart reads each document and pulls out the values, medications, conditions, and findings — then builds your timeline. Results trend across years, automatically merged across the different labs that reported them.

  3. 3

    Let the AI connect the dots

    Run a full-chart review: the AI reads your entire history at once and surfaces patterns, changes, and follow-ups you'd never spot flipping through individual reports.

  4. 4

    Ask before you go

    Heading to an appointment? Ask Remi about your own records and get a focused, grounded set of questions to bring with you — so the short time you get with your doctor actually counts.

Private by design

Yours to read. Ours to never see.

Your password derives an encryption key that lives only in your browser. Your documents are sealed before they ever reach us — we store blobs we can’t open. When you need to share, send a doctor a single-use link whose key rides in the URL fragment, so even we never receive it. Expire it, cap its opens, revoke it anytime.

Read exactly how the encryption works →
What we cannot see

Your password. Your master encryption key. The contents of any record you've uploaded. The recipients of your share links.

What we can see

Your email. The structured findings extracted from your documents (so we can power trends, AI review, and chat). Timestamps of when you logged in, uploaded, downloaded, or shared. Hashed IP addresses for audit.

The one plaintext moment

To extract findings, your browser sends the decrypted document to our extractor, which forwards it to an LLM and writes back only the structured results. The plaintext is never stored on our servers and never logged — and your name and identity are never sent with it.

Why this exists

“I built open-chart because my own records were scattered across a decade of portals, and no one — including my doctors — could see the whole picture. It’s the tool I wanted: every result in one place, private by construction, and smart enough to tell me what to ask at my next appointment.”

— Steve, founder · read the principles we build by

Questions people ask before trusting us

Can you actually see my medical records?

No. Your documents are encrypted in your browser with a key derived from your password — a key that never leaves your device. What we store is sealed data we cannot open. The one carefully scoped exception (the moment of AI analysis) is documented in plain English on our Security page.

Is open-chart HIPAA-compliant?

HIPAA applies to healthcare providers and insurers — as a personal tool you use directly, open-chart isn’t a covered entity. Instead of relying on a legal label, we protect your data structurally: browser-side encryption, no ads, no data sales, and a public description of exactly what we can and cannot see.

What happens if I stop paying?

Nothing is taken away. Everything already analyzed stays readable and downloadable, trends keep working, and share links keep working. Only new AI analysis pauses until you subscribe again or buy one-time processing.

More questions — billing, exports, portals — answered on the pricing page.

Your records, finally working for you.

Sign up takes thirty seconds. Try everything free — 3 documents analyzed, a full AI chart review, and 5 questions to Remi, no card. The encryption happens in your browser; we never see your password.

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