Privacy Policy

Subayaku Privacy Policy

1. Who we are

DAI Labs K.K. (“DAI Labs,” “we,” “us”) operates Subayaku, a browser-based service that transcribes speech, translates it into another language, and produces AI summaries (the “Service”). This Privacy Policy explains how we handle personal information in accordance with the Act on the Protection of Personal Information of Japan (“APPI”) and other applicable laws.


Company	DAI Labs K.K.
Address	Shibadaimon Yamato Bldg 3F, Shibadaimon 1-6-6, Minato-ku, Tokyo, Japan
Privacy contact	[email protected]

This policy applies to the Subayaku website, web application and related services. It does not apply to third-party websites linked from the Service.

2. Information we collect

We collect only the information needed to provide and improve the Service.

Category	Examples	Source
Account information	Name, email address, company name (optional), login credentials	You, when you register
Audio	Speech captured through your browser microphone while a session is active	Your device
Transcripts and translations	Text produced from your audio, and its translation	Generated by the Service
AI summaries	Summaries generated from your transcripts	Generated by the Service
Usage information	Pages viewed, features used, session length, language pairs selected	Automatically, via the Service and analytics tools
Device and technical information	IP address, browser type, operating system, cookie identifiers, error logs	Automatically
Payment information	Billing details, processed by payment provider	You / payment provider
Support communications	Messages you send us	You

Audio, transcripts and summaries may contain personal information about you or others, including sensitive information if spoken. Please avoid recording special care-required personal information unless necessary.

3. How we use your information

We use personal information only for the following purposes (APPI Art. 17):

To create and manage your account and authenticate you.
To provide the Service: transcribing audio, translating text, and generating AI summaries.
To store your transcripts and summaries so you can view them later.
To respond to inquiries and provide customer support.
To send service notices, such as changes to these policies, security alerts and billing information.
To send news about new features or offers, where permitted; you can opt out at any time.
To analyze usage in aggregate and improve the Service’s features, performance and user experience.
To detect, prevent and respond to fraud, abuse, security incidents and violations of our Terms of Service.
To process payments.
To comply with laws, regulations and requests from public authorities.

We do not use the content of your audio, transcripts or summaries to train AI models, ours or our providers’. If this changes, we will ask for your consent first.

We will not use personal information beyond these purposes without your consent, except where permitted by law.

4. Audio recordings

By default, we do not store your audio. Audio is streamed from your browser to our speech-processing provider, converted to text in real time, and then discarded once processing is complete.

The Service only captures audio after you grant microphone permission and start a session. You can stop recording at any time.

Optional recording storage (future feature). We may later offer a setting that lets you save recordings. If you turn it on, we will store your recordings with your other content and retain them as described in Section 9. We will update this policy before the feature becomes available, and it will stay off unless you enable it.

Other people’s voices. If you record conversations that include other people, you are responsible for informing them and obtaining any consent required by law.

5. AI processing and service providers

We entrust the handling of personal information to the service providers below, to the extent needed to run the Service (APPI Art. 27(5)(i)). We select providers carefully, bind them by contract to confidentiality and security obligations, and supervise them appropriately.

Provider	Purpose	Data handled	Processing location
Google Cloud (Google LLC)	Hosting, databases, infrastructure	All Service data	Japan (Tokyo region)
Google Vertex AI / Gemini (Google LLC)	Generating AI summaries	Transcripts, translations	Japan (Tokyo region)
Soniox	Speech recognition and translation	Audio, transcripts	Japan region
Google Analytics (Google LLC)	Usage analytics	Usage and device data	Global
[Payment provider, TBD]	Payment processing	Billing information	[Country TBD]

Our AI providers process your content only to deliver the Service to you. Under our agreements with them, they do not use your content to train their models.

AI-generated transcripts, translations and summaries may contain errors. Please check important content before relying on it.

6. Where your data is stored

Your account data, transcripts, translations and summaries are stored on Google Cloud servers in Japan (Tokyo region). Speech processing by Soniox also takes place in its Japan region.

Some of our providers are companies based outside Japan, including in the United States. Where a provider in a foreign country handles your personal information, we will either obtain your consent after providing the information required by APPI Art. 28, or ensure the provider maintains a system of protection equivalent to APPI through contract. You can ask us for details of these measures and of the personal information protection regimes in those countries using the contact in Section 12.

Google Analytics data may be processed in the United States and other countries where Google operates. Information on the United States’ privacy system is published by the PPC [https://www.ppc.go.jp/enforcement/infoprovision/laws/offshore_report_america].

7. Sharing and disclosure

We do not sell your personal information, and we do not provide it to third parties without your prior consent, except:

When required by law, including in response to a lawful request from a court, the police or another public authority.
When necessary to protect a person’s life, body or property and it is difficult to obtain your consent.
When we entrust handling to service providers within the scope of the purposes of use (Section 5).
In a merger, business transfer or other succession of business, where the information passes to the successor under the same purposes of use.
Other cases permitted by APPI.

We do not currently carry out joint use of personal information with other companies. If we start, we will announce it in advance as required by law.

If your account is part of an organization’s plan [if offered], the account administrator may be able to view your transcripts and summaries.

8. Cookies, analytics and external transmission

We use cookies and similar technologies to keep you logged in, remember your settings, and understand how the Service is used.

We use Google Analytics, provided by Google LLC, to analyze usage. Google Analytics uses cookies to collect information such as pages visited, time spent, browser type, approximate location derived from IP address, and a device identifier. This information is sent to Google and used to produce aggregate statistics for us. Google handles it under Google’s Privacy Policy. We do not send the content of your audio, transcripts or summaries to Google Analytics.

External transmission notice (Telecommunications Business Act):

Recipient	Information sent	Purpose
Google LLC (Google Analytics)	Cookie ID, pages viewed, referrer, browser and device information, IP address	Usage analysis and Service improvement

You can block cookies in your browser settings, though some features may stop working. You can opt out of Google Analytics with the Google Analytics Opt-out Browser Add-on.

9. Retention and deletion

We keep personal information only as long as needed for the purposes in Section 3.

Data	Retention
Audio	Not stored; discarded after real-time processing (unless you enable optional storage in future)
Transcripts, translations, summaries	Until you delete them or close your account
Account information	Until you close your account, then deleted within 30 days
Backups	Removed from backups within 90 days of deletion
Analytics data	14 months, per Google Analytics settings
Billing records	As required by tax and accounting law (generally 7 years in Japan)

You can delete individual transcripts and summaries in the app, or delete your account. We may keep information longer where the law requires it or to resolve disputes, and may keep anonymized statistics that no longer identify you.

10. Security measures

We take the following measures to prevent leakage, loss or damage of personal information (APPI Art. 23):

Organizational: a designated person responsible for personal information, internal rules for handling it, and a process for reporting incidents.
Human: confidentiality obligations and regular training for staff.
Physical: data held in Google Cloud data centers with physical access controls.
Technical: encryption in transit (TLS) and at rest, access controls with least privilege, authentication, and logging and monitoring of access.
Understanding the external environment: data is stored in Japan; we review the legal environment of countries where our providers are based (see Section 6).

If a data breach occurs that is likely to harm your rights, we will report it to the Personal Information Protection Commission and notify affected users as required by APPI Art. 26.

11. Your rights

Under APPI, you may ask us to do the following for your retained personal data:

Notify you of the purposes of use.
Disclose the data we hold about you, including records of provision to third parties.
Correct, add to or delete inaccurate data.
Stop using or delete data handled in violation of law or no longer needed, or where its handling may harm your rights.
Stop providing data to third parties.

Send requests to the contact in Section 12. We will verify your identity before responding and reply without undue delay. Many requests can also be handled directly in the app by editing your profile or deleting content.

12. Children, changes and contact

Children. The Service is not intended for children under 16. Minors may use it only with the consent of a parent or legal guardian.

Changes. We may update this policy when laws or the Service change. For material changes, we will notify you by email or in the Service at least 14 days before they take effect. The date at the top shows when it was last updated.

Contact. For questions, requests or complaints about personal information:

DAI Labs K.K., Personal Information Inquiries: Shibadaimon Yamato Bldg 3F, Shibadaimon 1-6-6, Minato-ku, Tokyo, Japan; Email: [email protected]

Established: 2026/11/10 Last updated: 2026/11/10