Appendix: List of Cookies and Tools Used

Last Updated: April 10, 2026

Yellow Blue Inc.

Blue One uses the following external tools in accordance with our Privacy Policy to provide and improve our service, and for marketing purposes.

1. Strictly Necessary Tools for Service Provision

(These are essential tools required to provide the core functions of the Service, such as login, payment processing, translation, file storage, system notifications, security maintenance, and stable operation.)

AI Translation and Processing

To provide translation functions, we may use AI platforms provided by the following vendors (now or in the future):

  • Google LLC (Vertex AI / Gemini)
  • OpenAI, L.L.C. (GPT series)
  • Microsoft Corporation (Azure OpenAI Service)
  • Amazon Web Services, Inc. (AWS Bedrock / Titan)
  • Anthropic, PBC (Claude series)
  • Meta Platforms, Inc. (Llama)
  • Mistral AI
  • Cohere Inc.
  • Grok (xAI Corp.)
  • Stability AI Ltd

Authentication and Login

Firebase Authentication (Google LLC)

File Storage

Google Cloud Storage (Google LLC)

Payment Processing

Stripe, Inc.

Email Delivery (System Notifications)

SendGrid (Twilio, Inc.)

File Conversion

CloudConvert (Lunaweb GmbH)

Error Monitoring

Sentry (Functional Software, Inc.)

2. Analytical Tools for Service Improvement

(These tools help us understand how the service is used and improve its features and UI/UX.)

  • Google Analytics (Google LLC)
  • BigQuery (Google LLC)
  • Amplitude (Amplitude, Inc.)

3. Marketing and Communication Tools

(These tools are used to send newsletters and optimize our advertising.)

  • Email Delivery (Marketing): SendGrid (Twilio, Inc.)

4. Customer Support Tools

(These tools are used to handle inquiries from customers and provide service guidance.)

  • Email Delivery (Customer Support): SendGrid (Twilio, Inc.)

End