Privacy Policy

Service name: TokuPass

Operator: Triengage Inc. (company registration pending)

Contact for personal-data inquiries: support@triengage.com

On-device study data: progress, study streak, furigana right/wrong tallies, history, exam date, and an on-device anonymous ID. Stored only on your device (localStorage) and is not personal information.

Server study data: an aggregate of the study data above plus an anonymous authentication ID. The anonymous ID does not by itself identify an individual, but this policy treats it carefully as personal-related information.

Account information (only when you link an account): your Google account's email address, display name, and account identifier. This is personal information.

Access and usage: page-view and interaction events (our own measurement ledger) and aggregate figures via Vercel Analytics. As a rule this is statistical information that does not identify individuals.

To provide the learning service, save and restore study records, and show progress and diagnostics.

To respond to inquiries from the user.

To improve service quality, identify and address defects, and prevent misuse.

To create and publish statistical data. After anonymizing and aggregating so that individuals cannot be identified, we may publish it as industry reports such as learning or exam trends.

When you link an account, to carry your account-linked study records across devices.

Except where required by law, we do not provide personal data to third parties without the user's consent. However, outsourcing (Section 5), business succession (Section 6), and publishing statistical information that does not identify individuals (Section 3) are exceptions.

To operate the service, we entrust the handling of information to the following external services and supervise them appropriately.

Supabase (database and authentication platform; storage of study data and account information)

Vercel (hosting and access analytics)

For the location of processors' servers and cross-border transfers, see Section 7.

If the business of this service is transferred to a third party through a merger, company split, business transfer, or other cause, the study data and personal information collected under this policy may be transferred to the successor.

The successor is required to maintain handling equivalent to or stricter than this policy.

This service is also provided to users residing outside Japan (Vietnam, Indonesia, etc.).

Collected information may be stored and processed on servers in Japan or in a country/region designated by our processors. Users use the service on the understanding that data may be transferred to a country different from their country of residence.

Data storage region: Japan. Data of users residing outside Japan is also stored and processed on servers in Japan.

We use localStorage and similar technologies on your device to save and restore study data and to keep you signed in.

We use Vercel Analytics for access analytics.

You can disable these in your browser settings, but some parts of the service may then be unavailable.

Server-stored data is restricted by Row Level Security (RLS) so that each user can access only their own data. The key exposed in the browser alone cannot access other users' data.

Traffic is encrypted with TLS, and stored data is encrypted on our processors' platforms.

Access to the external services that manage data (Supabase, Vercel, etc.) is limited to authenticated accounts with multi-factor authentication enabled.

We keep collected personal information to the minimum necessary (we do not collect name or address) and limit who can access the data.

Users may request disclosure, correction, addition, deletion, or suspension of use of their personal information. Please contact us at the point of contact in Section 1.

On-device study data can be erased yourself using the in-app “Reset study history” feature or by clearing browser data.

If you have linked an account, you can unlink it and delete your server-side data yourself from the account-deletion feature in My Page. We also assist via the contact in Section 1.

This policy may be revised in response to changes in law or in the service. When we make important changes, we will announce them on the service.

Established: 2026-07-25

Last updated: 2026-07-28