Privacy Policy

Last updated: May 23, 2026

SKILLCert ("we", "our", or "us") respects the privacy of users ("you", "your") and handles personal information in accordance with this Privacy Policy. This is an English translation of the original Japanese Privacy Policy. In case of any discrepancy between the Japanese and English versions, the Japanese version shall prevail.

1. Information We Collect

• Registration information (name, display name, email address, date of birth, occupation, etc.)
• Learning-related data (type and date/time of exams taken, answers and correct/incorrect status of each question, elapsed time, feedback on questions and exams, ranking information, trophy acquisition history, AI diagnosis results, registration and study history of glossaries and flashcards)
• Communication data (profile comments, ranking comments, content of 1-on-1 messages and in-battle chat, send/receive timestamps, partner usernames, unread counts, post/reply/like/report history on the timeline (SNS), block relationship information)
• Device / usage information (device identifiers, OS / app version, access logs including timestamps and source IP addresses, identifiers via cookies and similar technologies, push notification device tokens, advertising identifiers (advertising ID), etc.)
• Online battle data (per-battle scores and win/loss results, exams used, correctness and answer time of each question, battle room identifiers, entry/exit history, etc.)
• Subscription and billing information (plan type in use, subscription start date, renewal date, status, etc. Payment information such as credit card numbers is managed by each app store or payment provider; we do not retain it.)

2. Purpose of Use

(1) Providing the Service

• To provide and operate main features of the Service such as practice questions, mock exams, online battles, weekly rankings, trophy display, AI diagnosis, AI chat, glossaries / flashcards, timeline (SNS), and messages.

(2) Identity Verification, Fraud Prevention, and Safe Operation

• Account registration and login authentication.
• Detection of unauthorized access, fraudulent participation through multiple accounts, and manipulation of online battle results.
• Response to spam and harassment, and provision of block / report functions.

(3) Service Improvement and Quality Enhancement

• To analyze question trends and feedback, and to replace questions or adjust difficulty.
• To improve UI / UX, performance, and stability based on various logs.

(4) Notifications and Support

• To display notices and campaign information from the operator.
• To respond to inquiries and provide information on failures and maintenance.

3. Third-Party Provision and Outsourcing

1. We do not provide personal information to third parties except where required by law or with the user's consent.
2. In providing the Service, we may outsource operations to cloud service providers, customer support providers, analytics tool providers, and others. In such cases, we conclude necessary and appropriate contracts and supervise the contractors.

   Specifically, we share data only with: Amazon Web Services (infrastructure), Google (Cloud / Gemini API / Firebase Cloud Messaging), OpenAI (AI tutor and diagnosis), Apple / Google (subscription billing), RevenueCat (subscription management), and Google AdMob (advertising on the free plan).

4. Handling of AI Generation and Analysis

1. We use learning logs and ranking information in statistical / anonymized form to improve the accuracy of AI question generation, analysis, and diagnosis.
2. Anonymized information and statistical information may be provided externally for purposes such as research and development, quality improvement, and report creation, but will not be disclosed to third parties in a personally identifiable form.

5. Security Measures

To prevent leakage, loss, or damage of personal information, we implement security measures such as access control, encryption of storage and communications, permission management, log auditing, and vulnerability countermeasures.

6. Handling of Messages, Battle Chat, and Timeline

1. 1-on-1 messages, in-battle chat, and timeline (SNS) posts and replies are stored for a certain period for service provision, fraud prevention, and user protection.
2. Under a block relationship, we may restrict functions such as profile viewing between the parties, message sending/receiving, battle invitations and battle chat, and timeline interaction.
3. In case of legal requests or when serious guideline violations are suspected, we may check the content of messages, chats, and posts.

7. Push Notifications

1. We may obtain notification tokens from user devices to send push notifications such as battle room creation notices and study reminders.
2. Notification reception can be stopped at any time from the OS settings on the device and the in-app notification settings.

8. Disclosure, Correction, and Deletion

Users may request disclosure, correction, suspension of use, or deletion of their personal information through our prescribed procedures. Note that some information may not be immediately deletable to the extent of legal obligations or as necessary for service operation.

9. Data Retention Period

• Account information will be deleted after a reasonable period following completion of withdrawal procedures, except where there is a retention obligation under law.
• Historical data such as weekly rankings, answer history, online battle results, and AI diagnosis results may be stored and used indefinitely after being processed into a non-personally-identifiable form for service verification, fraud prevention, and statistical analysis.

10. Policy Changes

We may revise this Policy in response to changes in laws or service content. When making important changes, we will notify users through in-app display or other appropriate methods. The latest version is posted in the app or on a site designated by us.

11. International Data Transfer

We use cloud services and data may be handled on servers located outside Japan. Even in such cases, we handle personal information with appropriate protective measures in accordance with applicable laws. Data is primarily processed and stored on AWS infrastructure located in the Asia-Pacific (Tokyo) region; some processing (AI services) may occur in regions outside Japan as managed by service providers.

12. Advertising (Free Plan)

1. On the free plan, we display ads (including video ads) provided by Google AdMob (Google LLC) within the Service. No ads are shown on the paid plans (Lite, Standard, Premium).
2. For ad delivery, impression/effectiveness measurement, and fraud prevention, Google and its advertising partners may collect and use advertising identifiers (advertising ID), device information, IP address, and ad impression/interaction history.
3. For how Google uses this information, please see "How Google uses information from sites or apps that use our services" (https://policies.google.com/technologies/partner-sites) and the Google Privacy Policy (https://policies.google.com/privacy).
4. You can limit personalized ads through your device settings (Android: reset advertising ID / opt out of ad personalization; iOS: App Tracking Transparency settings).
5. If you prefer not to see ads, you can upgrade to a paid plan.

Contact

For privacy inquiries, please contact: support@scba-ai.com

Governing Law: This Privacy Policy is governed by the laws of Japan.