Privacy Policy

Introduction

“SeqLens” (hereinafter referred to as “the Software”) is developed and operated by kumo.productions, Inc. (hereinafter referred to as “the Company” or “we”). We are committed to respecting user privacy and handling personal information appropriately and securely.

This privacy policy (“Policy”) describes the types of information we collect, the purposes for which it is used, and how it is managed through the Software and our official website (https://seqlens.app, hereinafter “the Website”). By using the Software or the Website, you agree to the terms of this Policy.

About Translations

While the Software and Website are available in multiple languages, the original and legally binding version of this Policy is the Japanese version. Other language versions are provided for reference only. In case of any discrepancies, the Japanese version shall prevail.

Information Collected and Purpose of Use

We collect and use information for the following purposes.

Inquiry Handling

• Information Collected: Name, email address, inquiry content, and any related attachments.
• Purpose: Responding to inquiries, providing user support, and analyzing data to improve our services.

Account and Authentication

When you use the account features of the Software or the Website, we collect the following information.

• Information Collected: Email address, display name, avatar image URL, OAuth provider name (such as Google) and the corresponding provider-side user identifier, and account creation/update timestamps.
• Purpose: Account creation and identity verification, maintaining sign-in state, and providing features restricted to authenticated users (such as license management and support).

License Management

We operate a proprietary license management API to deliver paid features of the Software.

• Information Collected:
  • User identifier (the user ID linked to the account), tenant information, and the contractual concurrent-device limit.
  • Association with Stripe customer ID and subscription ID.
  • Device identifier (a per-install device-unique ID), hostname, OS name and version, architecture, locale, and application version.
  • Timestamps and counters related to license issuance, verification, and device activity (active days and usage counts).
  • Source IP address of API requests (processed as transient log data).
• Purpose: Issuing and verifying licenses, preventing fraudulent use and concurrent-device overrun, supporting user inquiries, and ensuring stable operation and improvement of the service.

Analytics and Crash Reporting

We use the following third-party tools to collect information necessary for improving our services and identifying issues.

Vercel Analytics

• Information Collected: Page view history, referrer URLs, browser/OS information, access regions (with anonymized IP addresses), and counts of key user actions such as downloads and purchase-flow entries.
• Purpose: Improving the Website and optimizing the user experience.

Please refer to Vercel’s privacy policy for more details.

Sentry

• Information Collected: Technical data captured when application errors occur (stack traces, browser, OS, application version, and similar).
• Purpose: Identifying and fixing bugs, improving application stability.

Please refer to Sentry’s privacy policy for more details.

Use of Cookies

We use cookies only for the following limited purposes:

• Managing sessions and signin status.
• We do not use cookies to collect personally identifiable information or for advertising purposes.

Handling of Payment Information

Paid services in the Software and on the Website are handled through an external payment provider, Stripe, Inc.

Credit card numbers, expiration dates, security codes, and similar payment information are entered directly into Stripe’s payment page and transmitted to Stripe without passing through our servers. We do not retain this information.

We receive only minimal transaction metadata from Stripe — such as payment status, transaction ID, purchased plan, and customer ID — and associate it with the corresponding license record.

Please refer to Stripe’s privacy policy for more details.

External Services and Third-Party Provision

To operate the Software and the Website, we use the following cloud services. For details on each provider’s handling of personal information, please refer to their privacy policy.

Provider	Primary Use	Primary Location	Privacy Policy
Stripe, Inc.	Payment processing; storage of customer and transaction metadata	United States	Link
Supabase, Inc.	Authentication; account and database operations	United States	Link
Sentry (Functional Software, Inc.)	Error and crash reporting	United States	Link
Vercel, Inc.	Website hosting and analytics	United States	Link

All of the above providers are primarily based in the United States, and personal information may be handled in foreign countries including the United States as part of using their services. For information on personal information protection systems in foreign countries, please refer to the information published by the Personal Information Protection Commission of Japan.

Other than the above, except where the user has given consent or where required by law, we do not provide personal information to any third party.

Safety Management Measures

To prevent leakage and similar incidents involving personal information, we implement reasonable measures, including limiting access permissions and leveraging the encryption and authentication features provided by the cloud services we use. In the event of an incident, we will promptly take the necessary actions in accordance with applicable law.

Use by Minors

In principle, the Software and Website are not intended for use by minors under the age of 18 without the consent of a parent or legal guardian. If you are under 18, please obtain such consent before using the services.

Rights of Users

Users have the following rights regarding their personal information held by the Company.

• Request for disclosure
• Request for correction, addition, or deletion
• Request to suspend use or sharing
• Withdrawal of consent

To exercise any of these rights, please contact us via the Complaints, Consultations, and Contact Information section below. After verifying your identity, we will respond without undue delay in accordance with applicable law.

Retention of Personal Information

We retain collected personal information for a reasonable period necessary to achieve the purposes of use, and we delete or anonymize it without undue delay once it is no longer needed. Where retention is required by law, we retain the information for the required period.

Compliance with Laws

We comply with the Act on the Protection of Personal Information and other applicable Japanese laws and guidelines regarding the handling of personal information set forth in this Policy.

Changes to this Privacy Policy

We may revise this Policy from time to time in response to legal changes or service updates. If there is a change to the purpose of use, we will obtain prior consent or ensure the change is reasonably related to the original purpose.

Significant changes will be announced on the Website. We recommend reviewing this Policy periodically.

Complaints, Consultations, and Contact Information

For requests regarding disclosure, correction, deletion, or suspension of use of personal information, for complaints or consultations, or for any privacy-related concerns, please contact us at the address below.

• Business Name: kumo.productions, Inc.
• Representative: Tomoya Eguchi
• Address: Reiflat Shinjuku 309, 4-3-15 Shinjuku, Shinjuku-ku, Tokyo 160-0022, Japan
• Phone: +81-3-6824-5179
• Email Address: support@seqlens.app