We notify engineers by email at least 30 days before adding or replacing a sub-processor that handles their clients' data. You can object; if we can't accommodate you, you can terminate the affected project without penalty.
Vendor
Purpose
Data categories
Location
DPA
AI text processing — feedback translator, round summarizer, scope-creep flag.
Comment text · brief free-text (identity stripped)
United States
EU SCCs / UK IDTA · zero-retention
Postgres database + Auth for engineer accounts and projects.
Account data · project data · auth sessions
Frankfurt (eu-west-1)
EU SCCs (US parent) · EU data residency
Hosting for the mixrounds.com app and edge functions.
Request logs · IP · headers
Frankfurt (fra1)
EU SCCs (US parent) · pinned region
Stripe
Stripe Payments Europe
Subscription billing, invoicing, client payment collection.
Billing name · address · card token · VAT ID
Transactional email — client invites, notifications, receipts.
Email address · message subject · body
PostHog
PostHog Inc. (EU host)
Product analytics — opt-in only, no session replay.
Event data · redacted URL · anonymous distinct-id
Frankfurt (eu.i.posthog.com)
EU SCCs · EU-hosted infrastructure
99.—
Version history
2026-07-03v1.0Initial publication.