Last Updated: May 8, 2026
Effective Date: May 8, 2026
Julebu Labs, LLC ("Julebu," "we," "us," or "our") operates the Julebu English learning platform at https://julebu.ai (the "Service"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use the Service.
Please read this Privacy Policy carefully. By accessing or using the Service, you acknowledge that you have read, understood, and agree to be bound by this Privacy Policy.
We collect information in the following categories:
1.1 Information You Provide Directly
| Data Category | Examples | Purpose |
|---|---|---|
| Account Information | Email address, username, password, avatar image | Account creation and authentication |
| Profile Information | Display name, personal signature (bio), profile visibility settings | Personalization and social features |
| Payment Information | Billing details processed through Stripe, including payment confirmation, subscription status, customer/subscription identifiers, and billing portal activity where applicable (we do not store card numbers) | Membership purchases, recurring subscription billing, cancellation support, refunds, and tax/accounting records |
| User-Generated Content | Study group posts, comments, course reviews, dynamics, error reports, user feedback | Community features and service improvement |
| Audio Data | Voice recordings submitted for pronunciation practice (processed in real-time) | Real-time speech evaluation via Microsoft Azure (no permanent storage) |
| AI Chat Messages | Messages sent to the AI tutor, exercise context | Generating AI-powered learning assistance (via Microsoft Azure) |
| Communication Data | Support emails, feedback submissions | Customer support and service improvement |
1.2 Information Collected Automatically
| Data Category | Examples | Purpose |
|---|---|---|
| Learning Activity Data | Practice records, exercise completion, scores, session duration, attempt counts, mistake history, spaced repetition data | Tracking learning progress, personalizing the learning experience, and powering the spaced repetition system |
| Device Information | IP address, browser type and version, operating system, device type | Security, rate limiting, and technical support |
| Usage Data | Pages visited, features used, time spent, click patterns | Service improvement and analytics |
| Cookie and Storage Data | Session identifiers, user preferences, analytics tracking IDs | Authentication, preferences, and analytics |
| Timezone Information | IANA timezone string (e.g., "America/New_York") | Displaying time-based content correctly |
1.3 Information from Third-Party Sources
| Source | Data | Purpose |
|---|---|---|
| Google OAuth | Google account ID, email address, name, profile picture | Account creation via social login |
| Stripe | Payment confirmation, transaction status, subscription status, customer/subscription identifiers | Processing payments, recurring billing, subscription management, cancellations, and refunds |
We use the information we collect for the following purposes:
2.1 Core Service Delivery
2.2 Service Improvement
2.3 Communication
2.4 Safety and Security
2.5 Legal Compliance
If you are located in the European Economic Area (EEA), United Kingdom (UK), or Switzerland, we process your personal data based on the following legal grounds:
| Legal Basis | Examples |
|---|---|
| Performance of a Contract | Providing the Service, managing your account, processing payments, delivering learning features |
| Legitimate Interests | Improving the Service, analytics, fraud prevention, security, customer support |
| Consent | Analytics cookies, marketing communications (where applicable) |
| Legal Obligation | Responding to lawful requests, tax and accounting requirements |
You may withdraw your consent at any time where consent is the legal basis for processing (see Section 8).
We do not sell your personal information. We share your information only in the following circumstances:
4.1 Third-Party Service Providers
We engage the following categories of third-party service providers who process data on our behalf:
| Service Provider | Purpose | Data Shared | Privacy Policy |
|---|---|---|---|
| Stripe | Payment processing and recurring subscription billing | Email, order details, billing info, subscription/customer identifiers | stripe.com/privacy |
| OAuth authentication | Authentication tokens | policies.google.com/privacy | |
| Microsoft Azure | Speech pronunciation assessment and AI chat/tutoring | Audio recordings (processed in real-time, not stored), chat messages, exercise context | privacy.microsoft.com |
| Plausible Analytics | Privacy-friendly website analytics | Anonymized usage events | plausible.io/privacy |
| S3-Compatible Storage | File storage (avatars, images) | Uploaded files | Provider-specific |
All service providers are contractually obligated to process your data only as instructed by us and to maintain appropriate security measures.
4.2 Community Features
When you use community features (study groups, dynamics, reviews), your Content and profile information may be visible to other users based on your visibility settings:
4.3 Legal Requirements
We may disclose your information if required to do so by law or if we believe in good faith that such action is necessary to:
4.4 Business Transfers
In the event of a merger, acquisition, reorganization, bankruptcy, or sale of all or a portion of our assets, your information may be transferred as part of that transaction. We will notify you via email and/or a prominent notice on our Service of any change in ownership or uses of your personal information.
5.1 Cookies We Use
| Cookie Type | Purpose | Duration | Legal Basis |
|---|---|---|---|
| Essential/Session | Authentication, session management, security | Session | Necessary for service delivery |
| Functional | User preferences, timezone, language settings | Persistent | Legitimate interest |
| Analytics | Privacy-friendly usage analytics (Plausible) | Session | Legitimate interest (no personal data collected) |
5.2 Local Storage
We use browser localStorage and sessionStorage for:
5.3 Your Cookie Choices
Most web browsers allow you to control cookies through their settings. You can set your browser to refuse all or some cookies, or to alert you when cookies are being set. Please note that if you disable essential cookies, some parts of the Service may not function properly.
5.4 Browser Extension
Julebu offers an optional browser extension (compatible with Chrome, Edge, and other Chromium-based browsers) to streamline your learning workflow. When installed, the extension accesses the following data, with the scope and purpose described below:
| Data Source | Purpose | Access Trigger | Transmission |
|---|---|---|---|
| Julebu authentication cookies (julebu.ai, julebu.co) | Detect login state, identify region, maintain session | When the extension popup is opened | Used only for Julebu authentication. These cookies may be sent to Julebu API endpoints over HTTPS as part of authenticated requests, and are never sent to third parties by the extension |
| YouTube cookies (.youtube.com) — international users only | Authenticate video extraction (via yt-dlp) when you import a YouTube video to a course pack | Only when you start a YouTube import from the extension popup or from the official Julebu editor | Sent over HTTPS to editor-api.julebu.ai for the current import job; encrypted and temporarily stored in Redis for up to 30 minutes, deleted after the job reads it or when the TTL expires, and never shared with third parties |
| Active tab URL | Determine whether the current tab is a YouTube video page (to decide whether to show the import option) | When the extension popup is opened | Stays in the browser unless you start an import; the YouTube video URL is then sent to Julebu for the import job |
| chrome.storage.local | Remember your selected region (cn / global) for faster popup loading | After login | Local to your browser only |
YouTube Cookie Access (international users only)
YouTube import is available exclusively to Julebu international users (accounts on julebu.ai). The extension reads cookies for the youtube.com domain only when you start a YouTube import from the extension popup or from the official Julebu editor. The cookies are sent over HTTPS to editor-api.julebu.ai solely to authenticate the yt-dlp video extraction job. They are encrypted and temporarily stored in Redis for up to 30 minutes, deleted after the job reads them or when the TTL expires, never used for any other purpose, and never shared with third parties.
The extension performs no background sync, monitoring, or upload. All sensitive data access is gated by an explicit user action. You may stop this functionality at any time by:
The extension does not use eval(), does not load remote JavaScript, and does not include any analytics, ads, or tracking scripts.
We retain your personal data only for as long as necessary to fulfill the purposes for which it was collected:
| Data Category | Retention Period | Rationale |
|---|---|---|
| Account Information | Duration of account + 30 days after deletion | Account functionality |
| Learning Activity Data | Duration of account | Core service feature |
| Payment Records | 7 years after transaction | Legal/tax requirements |
| AI Chat Messages | Duration of account | Learning history |
| Audio Recordings | Not stored - processed in real-time for pronunciation assessment only | Real-time evaluation, no retention |
| Rate Limit / Security Logs | 90 days | Security and abuse prevention |
| Analytics Data | 24 months (aggregated) | Service improvement |
| User-Generated Content | Duration of account or until deleted by user | Community features |
When your account is deleted, we will delete or anonymize your personal data within 30 days, except where retention is required by law or for legitimate business purposes (e.g., resolving disputes, enforcing our agreements).
We implement appropriate technical and organizational measures to protect your personal data, including:
While we strive to use commercially acceptable means to protect your personal data, no method of transmission over the Internet or method of electronic storage is 100% secure. We cannot guarantee absolute security.
8.1 Rights for All Users
Regardless of your location, you have the right to:
To exercise these rights, contact us at [email protected]. We will respond within 30 days.
8.2 Additional Rights for EEA/UK Residents (GDPR)
If you are located in the European Economic Area or United Kingdom, you additionally have the right to:
Data Protection Authority Contacts:
We will respond to GDPR-related requests within 30 days. In complex cases, this period may be extended by an additional 60 days, and we will inform you of any extension within the initial 30-day period.
8.3 California Residents (CCPA/CPRA)
If you are a California resident, you have the following rights under the California Consumer Privacy Act (CCPA) and California Privacy Rights Act (CPRA):
Categories of Personal Information Collected (past 12 months):
| CCPA Category | Examples | Collected | Sold | Shared for Advertising |
|---|---|---|---|---|
| Identifiers | Email, username, IP address | Yes | No | No |
| Personal Information (Cal. Civ. Code § 1798.80) | Name, email | Yes | No | No |
| Internet Activity | Usage data, browsing history within the Service | Yes | No | No |
| Geolocation | IP-based approximate location | Yes | No | No |
| Audio Information | Voice recordings for pronunciation (processed in real-time, not stored) | Yes | No | No |
| Inferences | Learning progress, proficiency level | Yes | No | No |
| Sensitive Personal Information | Account login credentials | Yes | No | No |
To exercise your CCPA/CPRA rights, contact us at [email protected] or submit a verifiable consumer request. We will verify your identity before processing your request.
Your information may be transferred to and processed in countries other than your country of residence, including the United States, where our servers and some of our service providers are located. We ensure that appropriate safeguards are in place for such transfers, including Standard Contractual Clauses (SCCs) where required by applicable law.
By using the Service, you acknowledge that your information may be transferred internationally as described in this section.
10.1 Age Restrictions
The Service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. Children under 8 years of age are strictly prohibited from using the Service.
10.2 Parental Consent
For users between 13 and 18 years of age, we require parental or guardian consent before account creation. Parents or guardians who provide consent are agreeing to these Terms and this Privacy Policy on behalf of their child.
10.3 Parental Rights
Parents and guardians have the right to:
10.4 Our Commitments for Minor Users
For users under 18 years of age:
If you believe we have inadvertently collected information from a child under 13, please contact us immediately at [email protected], and we will promptly delete such information.
Some browsers transmit "Do Not Track" (DNT) signals. The Service currently does not respond to DNT signals. We use Plausible Analytics, which is a privacy-friendly analytics tool that does not track users across websites and does not use cookies for analytics purposes.
We may update this Privacy Policy from time to time. If we make material changes, we will notify you by:
Your continued use of the Service after the effective date of the revised Privacy Policy constitutes your acceptance of the changes. We encourage you to review this Privacy Policy periodically.
If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us:
Julebu Labs, LLC
For privacy-specific inquiries, please include "Privacy" in the subject line of your email. We will respond to all inquiries within 30 days.
This Privacy Policy was last updated on May 8, 2026.