Privacy Policy
Last updated: July 27, 2026
1. What we collect
Your account (email, display name, sign-in via our auth provider), and what you do in Senda: the artists you follow, Ways you begin, stamps you earn, reflections and guestbook lines you write, games you play, plans you save, and preferences like your home airport and language.
2. Location
When you catch a stamp, your device sends your current coordinates once so we can check you are near the stop. We use them for that check and store only the result - which stop, and when. We do not store your coordinates, track your location in the background, or build a movement history.
3. Chatting with the companion
The companion characters are AI. When you send one a message, that message and the last few turns of the conversation go to our model provider to generate the reply; we do not send your name, email, or location with them, and we do not keep the conversation after you close the chat. Before the model is called, the message is checked for language about self-harm, which is answered by a fixed handoff instead of by the model. What the companion is, and what happens then, is set out in The companion, and what it is not.
4. What we don't do
We don't sell your personal information, and we don't share it with advertisers. Booking and ticket links take you to third parties; what you do on their sites is governed by their privacy policies. Our hosting and infrastructure providers (for example Cloudflare and our auth/database provider) process data on our behalf to run the service.
5. What others can see
Guestbook lines you leave at a stop are shown publicly at that stop with your handle. Squad members can see the plans and votes you share with the squad. Your reflections are private to your account. Certificates are private unless you choose to share a screenshot.
6. Your choices
You can edit your display name, change your home airport, or stop following artists at any time. To delete your account and its data, contact us and we will remove it. Cookie use is limited to what the service needs to work (session, language, and door preference); we do not use third-party advertising cookies.
7. Contact
Privacy questions or deletion requests: [contact email - founder to set before launch].