Privacy Policy

1. Introduction

Adapteki ("we," "our," or "us") operates the Adapteki application and website (collectively, the "Service"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our Service.

By using our Service, you agree to the collection and use of information in accordance with this policy. If you do not agree with this policy, please do not use our Service.

2. Information We Collect

2.1 Information You Provide

• Account Information: When you register, we collect your email address and password (stored securely as a hash).
• Profile Information: Your target JLPT level and study preferences.
• Study Data: Your answers to questions, review history, and progress metrics.

2.2 Information from Third-Party Authentication

If you choose to sign in using a third-party authentication provider, we may receive certain information from that provider:

• Google: Email address, name, and profile picture
• Apple: Email address (which may be a private relay address) and name
• Facebook: Email address, name, and profile picture
• WeChat: OpenID, nickname, and profile picture
• Kakao: Email address, nickname, and profile picture
• LINE: User ID, display name, and profile picture

We only request the minimum information necessary to create and manage your account. We do not access your contacts, post on your behalf, or access any information beyond what is listed above.

2.3 Information Collected Automatically

When you use our Service, we automatically collect certain information:

• Device Information: Browser type, operating system, device type
• Usage Information: Pages visited, features used, time spent on pages
• Log Data: IP address, access times, referring URLs

3. Analytics and Tracking Technologies

3.1 Google Analytics

We use Google Analytics, a web analytics service provided by Google, Inc. ("Google"). Google Analytics uses cookies to help us analyze how users interact with our Service. The information generated by the cookie about your use of the Service is transmitted to and stored by Google on servers in the United States.

Google Analytics collects information such as how often users visit the Service, what pages they visit, and what other sites they used prior to coming to our Service. We use this information to improve our Service and user experience.

You can opt-out of Google Analytics by installing the Google Analytics Opt-out Browser Add-on.

For more information on Google's privacy practices, visit: Google Privacy Policy.

3.2 Hotjar

We use Hotjar, a behavior analytics service provided by Hotjar Ltd. Hotjar helps us understand how users interact with our Service through heatmaps, session recordings, and surveys. This allows us to identify usability issues and improve user experience.

Hotjar collects information including device type, browser type, geographic location (country only), language preference, and user interactions with pages (clicks, mouse movements, scrolling). Hotjar uses cookies and other technologies to collect data on user behavior and devices.

Important: Hotjar does not collect personally identifiable information that you do not voluntarily enter. Session recordings automatically suppress sensitive input fields (such as passwords) and we configure Hotjar to exclude recording of personal data entry.

You can opt-out of Hotjar's tracking by visiting: Hotjar Opt-out.

For more information on Hotjar's privacy practices, visit: Hotjar Privacy Policy.

4. How We Use Your Information

We use the information we collect to:

• Provide, operate, and maintain our Service
• Personalize your learning experience based on your progress and preferences
• Calculate your exam readiness and track your study progress
• Improve, analyze, and understand how our Service is used
• Develop new features and functionality
• Communicate with you about updates, security alerts, and support
• Detect, prevent, and address technical issues or fraudulent activity

Spaced Repetition: Your answer history (correct/incorrect responses and timing) is used by our spaced repetition algorithm to determine when each item should next appear for review. This allows us to show you items at optimal intervals for long-term retention.

5. Data Sharing and Disclosure

We do not sell your personal information. We may share your information in the following circumstances:

• Service Providers: With third-party vendors who perform services on our behalf (hosting, analytics, customer support)
• Legal Requirements: If required by law, court order, or governmental authority
• Business Transfers: In connection with a merger, acquisition, or sale of assets
• With Your Consent: When you explicitly authorize us to share your information

6. Data Retention

We retain your personal information for as long as your account is active or as needed to provide you with our Service. You may request deletion of your account and associated data at any time by contacting us at tryadapteki@gmail.com.

We may retain certain information as required by law or for legitimate business purposes, such as maintaining records of transactions.

7. Data Security

We implement appropriate technical and organizational measures to protect your personal information, including:

• Encryption of data in transit using HTTPS/TLS
• Secure password hashing using industry-standard algorithms
• Regular security assessments and updates
• Access controls limiting employee access to personal data

However, no method of transmission over the Internet or electronic storage is 100% secure. While we strive to protect your information, we cannot guarantee absolute security.

8. Your Rights (GDPR)

If you are located in the European Economic Area (EEA), United Kingdom, or Switzerland, you have certain rights under the General Data Protection Regulation (GDPR):

• Right of Access: Request a copy of your personal data
• Right to Rectification: Request correction of inaccurate data
• Right to Erasure: Request deletion of your data ("right to be forgotten")
• Right to Restrict Processing: Request limitation of how we use your data
• Right to Data Portability: Receive your data in a structured, machine-readable format
• Right to Object: Object to processing based on legitimate interests
• Right to Withdraw Consent: Withdraw consent at any time where processing is based on consent

To exercise these rights, please contact us at tryadapteki@gmail.com. We will respond to your request within 30 days.

Legal Basis for Processing: We process your data based on: (a) your consent, (b) performance of a contract (providing the Service), (c) compliance with legal obligations, and (d) our legitimate interests in improving and securing our Service.

9. International Data Transfers

Your information may be transferred to and processed in countries other than your own, including the United States, where our servers and service providers are located. These countries may have different data protection laws than your country of residence.

When we transfer data internationally, we implement appropriate safeguards, such as Standard Contractual Clauses approved by the European Commission, to ensure your data is protected.

10. Children's Privacy

Our Service is not directed to children under 13 years of age (or 16 in the EEA). We do not knowingly collect personal information from children. If you are a parent or guardian and believe your child has provided us with personal information, please contact us at tryadapteki@gmail.com and we will delete such information.

11. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date. We encourage you to review this Privacy Policy periodically.

For material changes, we will provide notice through the Service or by email prior to the changes becoming effective.

12. Contact Us

If you have questions about this Privacy Policy or our privacy practices, please contact us at:

Adapteki
Email: tryadapteki@gmail.com