How Notem works

A secure health journal for people navigating complex and chronic conditions. This page explains what we do, what we cannot do and how your data is handled.

From first symptom to specialist appointment

Every entry you log is an input. Notem reads your symptom history, detects patterns and generates a structured brief ready for your next appointment.

Journal entrysymptoms loggedPattern detectionClaude finds clustersNBrief generatedstructured and signedSpecialist matchNPI registry lookup01020304

How research finds you

When you search, Notem queries five peer-reviewed databases simultaneously. Results are merged and ranked so the most relevant studies surface first.

SymptomlogPubMed35M papersEurope PMC40M articlesSemantic ScholarAI rankedClinicalTrials.govactive trialsMergedresultsdedupedCitationnetworkProAll sources queried in parallel - results merged and deduplicated

Your data never leaves your control

Your health data is encrypted in transit and at rest. It is never sold to advertisers, never used to train AI models and never stored by Anthropic.

Your devicebrowser / iOS appTLS 1.3SupabaseAES-256 + row-level securityencrypted onlyClaude APIcontext in / answer outWHAT NEVER HAPPENSSold to advertisersor insurersUsed to train AImodelsStored by Claudeor AnthropicWHAT YOU CONTROLExport everything as JSONDelete account permanentlyData stays in your regionRow-level DB isolationFull audit trail

What Notem can do

  • +Track symptoms daily with severity, triggers, mood and sleep data
  • +Generate appointment briefs for specialist visits from your own logged data
  • +Search peer-reviewed research from PubMed and other medical databases
  • +Find specialists by specialty and location using the NPI registry
  • +Track medications and costs over time
  • +Import Apple Health data to enrich your health record
  • +Generate AI-powered questions for appointments (Pro)
  • +Write second opinion and prior authorization letters from your symptom data (Pro)

What Notem cannot do

  • !

    Cannot determine what condition you have

    Notem does not tell you what is wrong with you. Symptom matching is for educational reference only. High match percentages do not mean you have a condition.

  • !

    Cannot replace a doctor

    Notem is a tool to help you organize information and communicate more effectively with healthcare providers. It is not a clinical tool and has not been reviewed by medical professionals.

  • !

    Cannot prescribe treatment

    Nothing on this platform is a treatment recommendation. Pattern analysis by Claude is informational only and describes what your data shows.

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    Cannot guarantee accuracy of AI summaries

    AI-generated content including briefs, letters and research summaries should always be reviewed before use. We generate from your data but cannot guarantee every output is clinically accurate.

How your data is protected

Security is not a marketing claim. Here is what we actually do.

AES-256 encryption at rest

All data is stored encrypted via Supabase on AWS infrastructure using AES-256 encryption at rest.

TLS 1.3 in transit

All data transferred between your browser and our servers is encrypted using TLS 1.3.

Row-level security

Database policies ensure no user can ever access another user's data - enforced at the database level, not just the application layer.

Never sold

Your health records are never sold, shared with advertisers, insurers or any third party. Not now, not ever.

Never used for AI training

Your data is never used to train Claude or any AI model. What you log stays yours.

HIPAA-conscious design

We follow HIPAA-conscious engineering practices in how we store, access and handle health-related data.

Where research comes from

We do not generate research. Every result links to the original paper. Notem searches real databases using your symptom keywords - the same sources used by doctors and researchers worldwide.

PubMed

35+ million peer-reviewed studies

Maintained by the US National Library of Medicine. The gold standard for biomedical research. Free and publicly accessible.

Europe PMC

40+ million articles including preprints

Includes articles from journals not indexed in PubMed, plus preprints and grey literature. Results sorted by citation count.

ClinicalTrials.gov

Active recruiting studies

US registry of clinical studies. We surface trials currently recruiting participants that match your symptom profile.

Semantic Scholar

AI-powered research index

A free, AI-powered research tool covering hundreds of millions of scientific papers with citation and relevance ranking.

MedlinePlus

Plain-language health information

A service of the National Library of Medicine providing reliable, authoritative health information for patients and families.

Roadmap

Coming soon to Notem.

Flare prediction

AI-powered alerts when your logged patterns suggest an upcoming flare based on your personal triggers and history.

Wearable integrations beyond Apple Health

Sync data from Fitbit, Garmin, Whoop and other fitness trackers to enrich your health record automatically.

Medication interaction checker

Flag potential interactions between your logged medications using a trusted drug interaction database.

Community symptom boards

Anonymized community insights showing how others with similar symptom profiles are managing - no real names, no identifying information.

Built to give back

Where the money goes

5% of every Pro subscription goes directly to rare disease research. We partner with established medical research foundations that fund peer-reviewed studies into rare, complex and undiagnosed conditions.

Why we do it

The people using Notem are often at the end of a long road with few answers. Research funding is how that changes. We believe the business that benefits from these patients should contribute to solving their problem.

Transparency

We publish charity partner details and donation amounts in our annual transparency report. We do not take credit for vague commitments. We name the foundations and report the numbers.

Start your health journal today

Free to start. No credit card required. Your first step toward getting answers.

Create your free account

Notem is not a medical device. It does not provide medical advice. All content is for informational purposes only. Always consult a qualified healthcare provider before making health decisions.

Your data is encrypted, never sold and never used to train any AI - including Claude.