Legal

Privacy Policy

Last updated: November 9, 2026

This Policy explains what data Stiida collects, why we collect it, and the choices you have. We build a study tool, not a surveillance product. We collect only what we need to make the platform work.

Stiida is a product operated by Academial Technologies Limited.

1.Data we collect

Account data: email address, display name and, if you sign in with Google or X, your provider ID.

Your content: PDFs, Word documents, PowerPoint slides, text and Markdown files, audio and video recordings you upload, extracted study notes, flashcards, tests, answers and chat messages you create.

Usage data: XP, streaks, Stiida Credit balances and internal logs of AI feature usage (feature name, token counts and estimated cost) used for billing, credit metering and abuse prevention.

Product analytics: authenticated API route, request method, response status, response time and a temporary browser session identifier help us understand feature use and diagnose reliability. This activity log does not include request bodies, prompts, document content, query strings, IP addresses or device fingerprints.

Website analytics: first-party page visits, a random browser identifier, a temporary session identifier, page path without query parameters, referrer hostname, campaign tags, referral codes and broad country code where provided by a trusted hosting edge. When an account is created, the browser identifier may be linked to it to measure source-to-signup conversion. We do not store IP addresses, full referrer URLs, search queries or device fingerprints. You may opt out in the Cookie Policy.

Registration safeguards: request IP addresses are used transiently to rate-limit signups and are not stored. Reused browser identifiers may flag a signup for manual review; the attempted email and browser identifier are retained with the review record. Shared-device users may contact support to request review.

Optional study profile: country, broad region, education stage, field of study, study goal and how you heard about Stiida. These details support product segmentation. You may choose “Prefer not to say” for categorical questions.

2.How we use your data

We operate the service by indexing documents for cited answers, preparing study notes from recordings, generating tests, grading and flashcards, metering Stiida Credits, securing accounts and improving quality. We do not sell personal data or private documents, and we do not use academic files to build advertising profiles.

3.AI processing

When you generate study notes from a recording, the audio or video file is sent to our AI provider for processing.

When you use AI features, relevant extracted text and your question are sent to our AI provider solely to generate your answer. Stiida Credits are a platform-level abstraction; the provider never sees your credit balance or account.

4.Cookies, local storage & tracking

Essential browser localStorage keeps you signed in and saves application preferences such as theme or language. Optional site analytics uses a random first-party visitor identifier and session storage to aggregate visits; you can disable it in the Cookie Policy.

Third-party advertising: to support our free, ad-supported tier, third-party cookies, trackers and advertising partners may deliver programmatic ads to non-premium accounts. Subscribed users are exempt from these advertising trackers.

You can manage tracking permissions or opt out of personalized third-party advertising through browser settings, our consent banner or your device settings.

5.Who we share data with

We share data only with service processors needed to run Stiida: our AI provider, advertising networks for non-premium users, your payment provider as payment processor and secure cloud hosting providers. We may disclose data where required by law.

6.GDPR & CCPA global rights

Depending on your location, including the European Economic Area under GDPR or California under CCPA/CPRA, you may have statutory rights regarding your personal information.

Access and portability: request copies of personal data stored on our servers.
Erasure and deletion: request removal of your profile and data.
Opt out of sale or sharing: opt out of sharing data for cross-context behavioral advertising.

7.Retention

Your content is kept while your account exists. Deleting a space or document removes its files and extracted text. AI usage and product activity logs are retained for billing, security and analytics for up to 24 months, then deleted or anonymized.

8.Security & children

Passwords are hashed, traffic is encrypted in transit, and data access is restricted to what our systems need. No storage method is 100% secure, but we work hard to protect your information. Stiida is not directed at children under 13.

9.Changes & contact

If this Policy changes materially, we will notify you in-app or by email. For privacy questions, contact us or email [email protected].