This policy explains what information the EEG Master mobile app collects, how it is used, and the choices you have. It applies to the EEG Master app for Android and iOS, published by Vector 265.
EEG Master collects only what's needed to run your account, personalize your study plan, and track your learning progress — your email, a few onboarding details, and daily activity logs. There are no ads, no data sales, and no tracking for advertising purposes. Your data is stored securely with Google Firebase and is never shared with third parties for marketing.
EEG Master is a study app for the ASEPA/ANZAN EEG certification exam and for clinicians learning EEG. Creating an account is required to use the app, since your progress and study plan are tied to it. We collect the following categories of information:
When you sign up, we collect the email address and (optional) display name you provide. Your password is never seen or stored by us — it is handled entirely by Google Firebase Authentication, our authentication provider. If you sign in with Google in a future version of the app (native Google Sign-In is not available in the current Expo Go preview build), we receive your name, email address, and profile photo from Google, as permitted by your Google account settings.
During onboarding, we ask for your country, institution or workplace, professional role (e.g. resident, epilepsy fellow, EEG technologist), learning goals, and target exam/study timeline. This is used only to generate your personalized study plan.
We record which days you complete MCQ practice, flashcard review, atlas visits, or concept videos, so we can show your study streak and progress. We also store your generated study plan and your chosen daily reminder time.
If you enable daily study reminders, the reminder is scheduled directly on your device using your operating system's notification system. No reminder content or schedule is sent to or stored on our servers, and no push-notification token is collected.
EEG Master does not collect payment information (the app is free, with no in-app purchases), precise or approximate location, advertising identifiers, or any patient health information. We do not run advertising or third-party analytics/tracking SDKs.
We do not use your information for advertising, and we do not build profiles of you for any purpose beyond running the app's own features.
Your account and progress data are stored using Google Firebase Authentication and Cloud Firestore, running on Google Cloud infrastructure. Access to your data in Firestore is restricted by security rules so that only your own signed-in account can read or write your profile and daily logs — no other user of the app can see your data.
While no method of transmission or storage is 100% secure, we rely on Firebase's industry-standard encryption in transit and at rest, and we do not maintain a separate copy of your data outside of Firebase.
| Service | Purpose | Data involved |
|---|---|---|
| Google Firebase (Authentication & Firestore) | Account sign-in and storing your profile/progress | Email, display name, onboarding & progress data |
| Google Sign-In (future app versions) | Optional alternative to email/password sign-in | Name, email, profile photo, as shared by Google |
The app's Atlas section links out to an external, third-party EEG waveform reference site for hands-on pattern practice. Once you leave EEG Master through that link, that external site's own privacy policy applies — we don't control or receive data from it.
We retain your account and progress data for as long as your account remains active, so that your study plan and streaks stay intact between sessions. If you request deletion (see below), we delete your account data within a reasonable time, except where retaining limited records is required for legal or security purposes.
You can review and update most of your profile information (institution, goals, timeline) directly from the app's Profile section. To request a copy of your data, a correction, or full deletion of your account and associated data, email us at the address below — we currently handle these requests manually rather than through an automated in-app control, and we will confirm once your request has been completed. See our Account & Data Deletion page for the full steps.
EEG Master is intended for medical professionals, trainees, and students preparing for EEG certification, and is not directed at children. We do not knowingly collect information from anyone under 16. If you believe a child has provided us with personal information, please contact us and we will remove it.
EEG Master is used by trainees and clinicians in multiple countries. Your information is stored on Google Cloud infrastructure, which may process and store data in a country other than your own. By using the app, you consent to this transfer as necessary to provide the service.
We may update this policy as the app evolves — for example, when Google Sign-In becomes available in a full app-store build. We'll update the "Effective" date at the top of this page when changes are made. Continued use of the app after an update means you accept the revised policy.