Subprocessors
Last updated 28 October 2026.
The companies that process data for Sotto, and what each one gets.
| Provider | What for | What it gets | Keeps it? | Trains on it? |
|---|---|---|---|---|
| Railway | Hosting and database, United States | Everything stored in your account | As long as you keep it (see Privacy) | No |
| Soniox | Speech-to-text | Live audio from your phone during a session | No: processed and discarded | No |
| OpenRouter, routing to Google (Gemini, Gemma) and DeepSeek models | Answers on the lens, write-ups, Memory, Ask | Transcript text, your notes, and the text and photos from files you add | No: zero-retention routing only | No |
| OpenAI, through OpenRouter | The search index for Ask (embeddings) | The text of each write-up | [to confirm] | No |
| Tavily | Web search, only when a search is needed | The search words, which can include a phrase from your conversation; never the transcript | [to confirm] | [to confirm] |
| Stripe | Payments | Name, email, card (we never see the card number) | As the law requires | No |
| Telegram | Messaging, only if you connect it | Your messages with Sotto: recaps, reminders, questions, voice notes and files you send | Under Telegram's own policies | [to confirm] |
| Apple, Google, Mozilla push services | Reminder notifications | A fixed reminder line, nothing about you | — | — |
| Even Realities | The glasses and their phone app | Microphone audio passes through the Even app on your phone | [to confirm with Even] | [to confirm with Even] |
We'll post any new provider here and email account holders at least 30 days before it starts receiving data, except in an emergency, when we'll tell you as soon as we can.