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Subprocessors

Last updated: October 12, 2026

These are the companies that help Caylo run its service. Only one, Google Cloud, ever receives member information, and only under Google’s Business Associate Agreement.

Receives member information (BAA in place)

CompanyWhat it does for CayloLocation
Google CloudDatabase, file storage, sign-in, server functions, and AI writing help (Gemini on Vertex AI)United States

Never receives member information

CompanyWhat it does for CayloWhat it can see
CloudflareHosts caylo.app and the Office web pages, and stores pilot requestsPilot request details and website server logs
Email notification serviceTells Caylo when a pilot request arrivesPilot request details
IONOSHosts the hello@caylo.app mailboxEmails you send us
Google FontsDelivers the fonts on caylo.appYour IP address and browser
AppleDelivers the Caylo app to iPhonesApp files only
GitHubStores Caylo’s source code and runs its testsCode and made-up sample data only

Our promise

We add a company that would receive member information only with a BAA in place, and only after giving each affected program at least 30 days’ written notice. We review this list every quarter. Questions go to hello@caylo.app.