Privacy Policy

Last updated: September 8, 2026

AlgoBook (“we,” “our,” or “us”) is operated by CognitiveSquad. This Privacy Policy explains how we collect, use, disclose and safeguard your information when you use our platform at algobook.ai.

1. Information we collect

1.1 Account information

When you sign in with Google, we receive your name, email address and profile picture from your Google account. We never see your Google password.

1.2 Usage data

We collect data about how you use AlgoBook, including:

Problems generated, attempted and solved, and the hints, editorials and tutor conversations you open
Code submissions, run results and execution metrics
Project creation, activity patterns, practice streaks and performance metrics such as topic mastery and rating
Time spent on problems and in mock interviews

1.3 Technical data

We automatically collect certain technical information including browser type, device information, IP address and pages visited. This is collected through Google Analytics and our server logs.

2. How we use your information

Provide and maintain the AlgoBook platform
Personalise your practice with AI-powered recommendations, spaced repetition and difficulty calibration
Track your progress and generate performance analytics, leaderboards and achievements
Process subscription payments
Communicate with you about your account and updates
Improve our services and develop new features
Prevent fraud and abuse and keep the platform secure

3. Data sharing

We do not sell your personal information. We may share data with:

Service providers: Google Firebase (authentication and database), an AI model provider (problem generation and tutoring — your code and problem context are sent, never your email or identity), a code-execution provider (your submitted code and test inputs), and payment processors for subscription handling.
Legal requirements: if required by law, court order or governmental regulation.
Public profile: your username, display name, avatar, bio, skills, badges and solve statistics are visible on your public profile page and on leaderboards. Your email, quotas and private settings are never public. You can turn the public profile off in Settings → Privacy.

4. Data storage & security

Your data is stored on Google Cloud (via Firebase) with encryption at rest and in transit. Every API request is authenticated with a short-lived token and access rules are enforced server-side. We implement industry-standard security measures, but no method of electronic storage is 100 % secure.

5. Your rights

Access the personal data we hold about you
Request correction of inaccurate data
Delete your account and associated data yourself from Settings → Danger zone (the subscription ledger is retained for accounting)
Export your submission history and profile data
Opt out of marketing communications

6. Cookies & analytics

We use Google Analytics to understand how people use AlgoBook. We also use local storage to remember your editor layout, theme and drafts on the device you are using.

7. Children’s privacy

AlgoBook is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us.

8. Changes to this policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy on this page and updating the “Last updated” date.

9. Contact us

If you have any questions about this Privacy Policy, email contact@cognitivesquad.com or use the contact form.

1. Information we collect

1.1 Account information

When you sign in with Google, we receive your name, email address and profile picture from your Google account. We never see your Google password.

1.2 Usage data

We collect data about how you use AlgoBook, including:

Problems generated, attempted and solved, and the hints, editorials and tutor conversations you open

Code submissions, run results and execution metrics

Project creation, activity patterns, practice streaks and performance metrics such as topic mastery and rating

Time spent on problems and in mock interviews

1.3 Technical data

We automatically collect certain technical information including browser type, device information, IP address and pages visited. This is collected through Google Analytics and our server logs.

2. How we use your information

Provide and maintain the AlgoBook platform

Personalise your practice with AI-powered recommendations, spaced repetition and difficulty calibration

Track your progress and generate performance analytics, leaderboards and achievements

Process subscription payments

Communicate with you about your account and updates

Improve our services and develop new features

Prevent fraud and abuse and keep the platform secure

3. Data sharing

We do not sell your personal information. We may share data with:

Service providers: Google Firebase (authentication and database), an AI model provider (problem generation and tutoring — your code and problem context are sent, never your email or identity), a code-execution provider (your submitted code and test inputs), and payment processors for subscription handling.

Legal requirements: if required by law, court order or governmental regulation.

Public profile: your username, display name, avatar, bio, skills, badges and solve statistics are visible on your public profile page and on leaderboards. Your email, quotas and private settings are never public. You can turn the public profile off in Settings → Privacy.