Subprocessors
OncoChat, a product of Sifnos Inc., uses the following third-party subprocessors to deliver our service. This list is updated as subprocessors change. Material changes will be communicated to users per our Terms of Service.
Last updated: March 31, 2026
| Subprocessor | Purpose | Location |
|---|---|---|
Google Cloud Platform Infrastructure | Cloud infrastructure, compute, storage, Cloud SQL (PostgreSQL), Cloud Run | United States |
Firebase (Google) Authentication | Authentication, user identity management | United States |
Google Vertex AI AI/ML | AI/ML model hosting and inference (Gemini) | United States |
OpenAI AI/ML | AI/ML model inference for conversational features | United States |
Twilio Communications | SMS messaging, voice calls, phone number verification | United States |
Vercel Infrastructure | Web application hosting and CDN | United States |
Data Handling
- All subprocessors are bound by data processing agreements (DPAs) that include EU Standard Contractual Clauses where applicable.
- We do not permit subprocessors to use your personal data for their own marketing or advertising purposes.
- Health data shared with AI/ML providers is used solely for generating responses within OncoChat and is not retained by those providers for model training unless separately consented to.
- All data is encrypted in transit (TLS 1.2+) and at rest.
Questions about our subprocessors? Contact us.