Privacy notice

English Lab documents, extracted text, translations and reading excerpts are stored only in this browser's IndexedDB; they are not uploaded or account-synced. You can delete materials or export a text backup. Clearing site data removes local records. Account progress for starter courses continues to sync separately. Dictionary shards load from this site on demand. After local translation is enabled, the browser downloads a public model from Hugging Face; selected text is processed on the device and is not sent to a translation service. Browsers may evict model caches.

Uploaded lesson videos and courseware are stored in private Supabase Storage together with their names, formats, sizes, uploaders and lesson references. Authors and authorized reviewers can inspect files. Published course files are available to enrolled learners with the relevant course and classroom access. Playback and downloads use temporary links valid for up to one hour. Teachers can remove their files from a lesson.

Private messages store the two participants, message text, timestamps and read positions for one-to-one conversations and unread alerts. The site's private messaging interfaces return content only to the participants; messages do not appear in the public community. You can disable new conversations or block a member on the messaging page. Blocking preserves existing conversation history.

AimatraLab processes email addresses, account identifiers, authorized basic profile information such as names and avatars, and necessary sign-in and two-factor authentication data for sign-in and account linking. Email passwords are passed by our backend to Supabase for verification.

Community nicknames, avatars, biographies you choose to make public, and published posts and replies are publicly accessible. Saved items, notifications, preferences, reports and moderation records are processed according to their functions and access permissions; they are not displayed as public posts.

The site uses sign-in cookies, local storage for language choices, drafts and return destinations, and a first-party visitor cookie lasting up to 400 days. Statistics store a hash of the browser identifier, the date and a sign-in classification; daily account activity is recorded separately. You can opt out through your browser's GPC or DNT signal. When the server receives that signal, it skips that visit's statistics and clears this visitor cookie. Clearing cookies resets the browser identifier.

The site uses Cloudflare for hosting and CAPTCHA, Supabase for authentication, the database and file storage, and email services for confirmation and password recovery messages. Rate limiting and CAPTCHA verification process IP addresses. These data support the relevant functions, statistics and abuse prevention.

Contact hello@aimatralab.com to request access, correction or deletion. We may need to verify account ownership before processing a request. Retention depends on the data's purpose and service configuration.