Frequently Asked Questions

Privacy & your data

How does Catina differ from uploading health data to ChatGPT?

A regular ChatGPT conversation uses OpenAI's hosted consumer service and follows your current training, retention, feedback, and safety controls. Health in ChatGPT has additional protections for connected health information. Catina instead stores supported records in an encrypted local Health Vault and uses browser-to-attested-enclave encryption for current sensitive AI request and response bodies. Operational metadata still remains visible where needed to run the service. Read the current comparison.

How does Catina compare with Health in ChatGPT?

Catina is a privacy-oriented health intelligence platform for importing lab reports from any lab or country, combining them with supported genetics and lifestyle context, tracking biomarkers, and generating personalized insights from an encrypted local Health Vault. Health in ChatGPT is a provider-hosted option for eligible US adults who want Apple Health, supported medical records, Function Health, and a mainstream assistant. OpenAI says connected health information is excluded from foundation-model training and ad targeting. Read the current comparison.

Do you store my health data?

Supported records are stored in an encrypted local Health Vault. Standard unlock is backend-assisted. Extra Local Protection separately adds a passphrase-gated local encryption layer. Sensitive AI features can send encrypted request bodies to an attested enclave for processing; this is separate from vault storage. We recommend keeping an encrypted export and the original source files.

Who can access my data?

Access depends on the feature. Your device holds the supported vault record. Standard unlock involves Catina's account backend, while Extra Local Protection adds a passphrase-derived layer. On supported sensitive AI paths, plaintext request bodies are intended to be available inside the verified enclave, while the relay and network providers can process operational headers and metadata.

What is a TEE and why does it matter?

A Trusted Execution Environment is a hardware-isolated processing environment that can produce attestation evidence about the code and configuration it is running. Catina's browser client verifies the selected enclave before establishing the supported encrypted body path. Device integrity, operational metadata, hardware trust, and supporting services remain part of the complete trust model.

Can my data be used to train AI models?

Personal Health Vault records and protected sensitive AI bodies are excluded from model training. Decryption happens exclusively inside the verified enclave. Account metadata, support messages, public community content, and other product surfaces have separate purposes and policies.

Is my data sold or used for ads?

Personal Health Vault records are excluded from sale and targeted advertising. Catina is funded by paid plans. Service providers receive limited account, payment, infrastructure, support, analytics, or encrypted-processing data as needed for their functions.

Can I sign up anonymously?

Yes. A made-up username is enough to create an account. Providing your real name, location, and other identifying details is optional. Any email address you provide is used for account access and support.

Security & encryption

Who holds the encryption keys?

By default, your keys are handled automatically through your account login, and your data decrypts on your device. For stricter control, enable Extra Local Protection in Settings: the added local encryption key is derived from a passphrase that stays in your browser. Recovery depends on the passphrase you keep.

How do I move my data to another device?

Go to Settings and export your encrypted data file, then import it on your new device. Your account login handles standard decryption automatically. Extra Local Protection asks for your separate passphrase on the new device.

What happens if I lose my passphrase?

Extra Local Protection gives you sole responsibility for the passphrase. Store it securely in a password manager and keep an encrypted vault backup. Losing both the passphrase and backup means rebuilding the vault from your original lab and genetics files.

How can I verify Catina's privacy claims?

Open the in-app Verification Center to inspect the current enclave verification state, then read the public Privacy Architecture for the data map, secure-session behavior, relay-visible metadata, trust assumptions, and non-E2EE areas. Remote attestation identifies the measured enclave used for the protected body path. Device integrity and network metadata remain separate parts of the trust model.

Using Catina

How should I use Catina alongside clinical care?

Catina helps you understand your data and prepare for informed conversations with your healthcare provider. Qualified professionals provide diagnosis, clinical care, and guidance about medication or treatment changes.

What data can I bring into Catina?

Lab results as PDFs from any lab, in multiple languages, with 100+ biomarkers recognized; raw genetics files from 23andMe and Ancestry; plus supplements, lifestyle, and personal notes. Wearable integrations (Whoop, Oura, Garmin, and more) are coming soon.

Which privacy and compliance standards apply to Catina?

Catina publishes its privacy architecture and data controls. A formal HIPAA compliance claim is outside the current published scope because applicability depends on the entity, role, data, contracts, and use case. Catina's local-vault design and data minimization reduce exposure while remaining separate from a legal assessment. People in the EEA and other jurisdictions can contact support about applicable access, correction, export, or deletion rights.

What happens to my data if Catina shuts down?

Keep the original source files and a current encrypted export. The vault copy is local, while standard unlock and some app functions depend on Catina services. Extra Local Protection depends on the passphrase you retain. Features that require active Catina services require those services to remain available.

Plans & payments

How do payments work?

Two ways. Pay by credit card as a recurring monthly or annual subscription that you can cancel anytime, or pay with USDC, Bitcoin, or ZCash for a fixed prepaid term. Apple Pay and Google Pay are coming soon. See Pricing for plan details, refunds, and upgrades.

Is there a free plan?

Yes. The Explorer tier is free and includes community features, the health tools (Body Composition Analyzer, Biomarker Unit Converter, VO2 Max Calculator), and limited chat with Catina. Paid plans start at $15/mo billed annually.