Privacy Policy
Last updated: October 2026
Our Privacy Principles:
Coi (“we”, “us”, “our”) was built to empower students and lifelong learners. We believe in transparency and data minimization. We do not sell your personal data, we do not run third-party advertising networks, and we only collect the information necessary to provide you with study tools, collaboration features, and AI-powered tutoring.1. Information We Collect
We collect information you provide directly to us when using Coi, as well as technical information necessary to keep the site functioning:
A. Account Information
When you register, we collect your email address, display name, and authentication credentials. We use Google Firebase Authentication for secure sign-in. If you choose to log in using Google OAuth, we receive your name, email address, and profile identifier from Google.
B. Study Materials & User Content
To provide our study services, we store the content you create and upload, including project titles, study cards, hierarchical outlines, notes, quiz answers, and files you attach (such as PDFs, Word documents, text files, and images up to 20MB in size).
C. Chat Transcripts & Prompts
When you converse with the AI tutor, your messages and questions are retained in your project history so that you can revisit them later.
D. Optional Survey Responses
During signup, you may optionally answer onboarding questions regarding your role (e.g. Student, Teacher, Researcher), study interests, and referral sources. This information helps tailor your experience and guide product improvements.
E. Local Storage & Device Preferences
We use your browser’s local storage (localStorage) to store your chosen visual theme (light, dark, device, or pink). We do not use advertising cookies, third-party marketing pixels, or tracking beacons.
2. How We Use Your Information
We use the collected information for the following specific purposes:
- To create and manage your user account.
- To store, organize, and synchronize your study projects, cards, and courses across devices.
- To process study materials through AI models to generate interactive explanations, card recommendations, and quizzes.
- To enable social features you choose to use, such as inviting friends, study groups, and sharing project access.
- To detect, investigate, and prevent fraudulent activity, security vulnerabilities, or abuse of our systems.
3. Third-Party Service Providers (Sub-processors)
We do not sell, rent, or lease your personal information to third parties. We share data only with trusted infrastructure providers required to operate Coi:
Google Firebase & Google Cloud Platform
We use Firebase Authentication to secure user identity, Cloud Firestore to store application records, and Firebase Cloud Storage for user-uploaded study files. All data is protected with encrypted transmission and access controls.
Google Generative AI (Gemini API)
When you chat with the tutor, generate flashcards, or ask questions about an uploaded document, relevant study text and attachments are sent to Google’s Gemini API to generate the response. Google processes this information to deliver the AI output in accordance with its enterprise service terms.
4. Data Retention & Account Deletion (Right to be Forgotten)
We retain your personal information and user content for as long as your account exists.
How to Delete Your Account and Data
You have the absolute right to have your account and all associated personal data permanently deleted. To exercise this right, please send an email to:
info@coilearn.com
Please send the request from the email address associated with your Coi account with the subject line “Account Deletion Request”. Upon confirming your identity, we will permanently delete your account, study projects, uploaded files, and associated records within thirty (30) days.
5. Children’s Online Privacy (COPPA & Under-13 Notice)
Coi is a study tool designed for students and educators who are at least 13 years old (or 16 in the European Economic Area / United Kingdom). We do not knowingly collect, solicit, or maintain personal information from children under 13.
If we become aware that we have inadvertently collected personal information from a child under 13 without verified parental consent, we will take immediate steps to delete that account and all associated data. If you are a parent or legal guardian and believe your child under 13 has registered for Coi, please contact us immediately at info@coilearn.com.
6. Your Privacy Rights (GDPR & CCPA/CPRA)
Depending on your jurisdiction, you may have the following statutory privacy rights:
- Right of Access: Request confirmation of whether we process your data and obtain a copy.
- Right to Rectification: Update or correct inaccurate personal information.
- Right to Erasure: Request permanent deletion of your personal data.
- Right to Restrict Processing: Request restrictions on how your data is processed.
- No Sale or Sharing: Coi does not sell personal information or share personal information for cross-context behavioral advertising.
To exercise any of these rights, email us at info@coilearn.com. We will never discriminate against you for exercising your privacy rights.
7. Data Security
We implement industry-standard administrative, physical, and technical security safeguards to protect your personal information. All web traffic is encrypted in transit via SSL/TLS (HTTPS). Access to our database is governed by server-side verification and strict Firestore security rules. However, no internet transmission or electronic storage method is completely secure, and we cannot guarantee absolute security.
8. Changes to this Privacy Policy
We may update this Privacy Policy periodically to reflect changes in our practices or applicable legal requirements. We will notify users of material changes by updating the “Last updated” date at the top of this page. We encourage you to review this policy periodically.
9. Contact Information
If you have questions, feedback, or requests concerning this Privacy Policy or your data, please contact:
© 2026 Coi. Created by Lev Smolsky.