| Google Cloud Japan G.K. | For system construction of the service |
| Google Asia Pacific Pte. Ltd | For system construction of the service |
| Amazon Web Services, Inc. | For system construction of the service |
| Moloco Inc. | For delivering advertising services |
| Datadog, Inc. | For monitoring the system of the service |
| Functional Software, Inc. | For monitoring the system of the service |
| OpenAI, L.L.C. | For providing user input assistance features such as schedule scanning |
| Groq, Inc. | For providing user input assistance features such as schedule scanning |
| Slack Technologies, LLC | For analysis and planning related to service improvement |
| Twilio, Inc. | For sending emails from the service |
| Amplitude, Inc | For analysis related to service improvement |
| Zendesk, Inc. | For responding to inquiries |
| AppsFlyer Ltd. | For analysis related to service improvement |
| Zoho Japan K.K. | For analysis related to service improvement |
| Anthropic PBC | For providing user input assistance features such as schedule scanning |
| New Relic K.K. | For monitoring the system of the service |