Processors and external sources
| Provider | Purpose | Location and safeguards |
|---|---|---|
| Vercel | Application hosting, delivery, security logs, and privacy-minimized analytics on public information pages | Application servers run in Frankfurt, Germany; delivery and support infrastructure may be outside the EEA under contractual transfer safeguards |
| Supabase | Account authentication, database, session handling, and application storage, including private listening-episode audio files | Database and storage in Frankfurt, Germany; support infrastructure may be outside the EEA under contractual transfer safeguards |
| OpenAI | Prepare requested study notes, note additions, custom readings, writing tasks, writing feedback, situations, missions (game text, reply feedback and AI-generated voices), listening episodes (script and AI-generated voice audio) and preparations in Prepare a situation (with up to 40 of your saved words and their meanings for its With your words part) | Processing may occur outside the EEA under the provider agreement and applicable transfer safeguards |
| Resend | Deliver emails: sign-in links (through Supabase Auth), plan changes, cancellation and withdrawal confirmations, the weekly summary, messages sent through the contact form, problem reports from the app, and an invitation to a shared collection sent to an address without a Linota account | Processing may occur outside the EEA under the provider agreement and applicable transfer safeguards |
| Sentry (Functional Software, Inc.) | Crash reports from the iPhone app: the error, the app version, the device model and system version, and the screens and requests just before it, with no account, IP address, typed text or screenshots | Stored in Sentry's EU region in Frankfurt, Germany; support access from outside the EEA only under the provider agreement and its transfer safeguards |
| Expo (650 Industries, Inc.) | Push notifications to the iPhone app, only if you turn them on: Linota sends Expo the device's push address with the notification's text and which screen it opens, and Expo passes it to Apple's push service for delivery | Processing in the United States under the provider agreement and applicable transfer safeguards |
| Wikimedia Foundation services | Provide public reading content, article suggestions and links to German Wikipedia articles for tapped nouns and names, using minimized dictionary terms | Requests are made to Wikimedia infrastructure; opening an article is a direct visit to Wikimedia |
| Apple (App Store) | Sign in with Apple, if you choose it: Apple confirms your Apple Account and passes Linota a stable ID and, if you share it, your email address. For plans bought in the iPhone app, Apple sells and bills the subscription, handles refunds and sends Linota signed notices of renewals, cancellations and refunds; Linota passes Apple an internal account ID with each purchase. If you turn on notifications in the app, Apple's push service delivers them to your iPhone. | Apple Distribution International Ltd. (Ireland) and Apple Inc. (United States). Apple is an independent controller for purchase and payment data, under its own privacy policy |
How changes are handled
Linota reviews processor contracts, data-processing terms, locations, and security information before use. This list is updated before a new provider receives personal data. Material changes will be communicated where required.
Last updated: 19 October 2026.