Terms of Use

Established: May 10, 2026 · Last updated: June 25, 2026

These Terms of Use ("Terms") set out the conditions for using the website "DELT" (https://getdelt.com; the "Site") that we operate, and the iOS application "DELT" (the "App") that we make available on the App Store. In these Terms, "we," "us," or "our" refers to the operator of the Site and the App.

These Terms consist of three parts. Part 1 sets out the conditions for using the Site; Part 2 sets out the conditions for using the App (the End User License Agreement / EULA). By using the Site, the user is deemed to have agreed to Part 1, and by installing or using the App, the user is deemed to have agreed to Part 2. Matters common to both are set out in "Part 3 — Common Provisions."

Part 1 — Conditions for Using the Site

1. Scope (Site)

This Part 1 sets out the rights and obligations between the user and us in connection with the use of the Site.

2. Purpose of the Site

The Site is intended to provide information about the App. The conditions for using the App are set out in Part 2 of these Terms, "Conditions for Using the App (End User License Agreement / EULA)."

The features, timing of availability, form of provision, pricing, geographic availability, and all other matters concerning the App described on the Site may be changed or discontinued without notice due to development status, external factors, our business judgment, or other circumstances, and none of these constitutes any warranty or commitment by us to the user.

3. Intellectual Property Rights

3.1

All copyrights, trademark rights, and other intellectual property rights in all content posted on the Site (including but not limited to text, images, logos, designs, source code, and video) belong to us or to the rightful rights holders.

3.2

The user may not reproduce, reprint, modify, distribute, publicly transmit, translate, or otherwise use the content of the Site beyond the scope of private use without our prior written permission (including by email).

3.3

Quotation shall be made within the scope permitted under copyright law and with a clear indication of the source (such as the URL of the Site).

3.4

The font "Jost" used on the Site is provided by Indestructible Type under the SIL Open Font License 1.1.

4. Prohibited Conduct (Site)

In using the Site, the user must not engage in any of the following:

  1. Acts that violate laws or regulations or public order and morals
  2. Acts that infringe the intellectual property rights, portrait rights, privacy, reputation, or other rights or interests of us or any third party
  3. Acts that place an excessive load on the Site's servers or network
  4. Accessing the Site by automated means (bots, scraping tools, etc.), except for legitimate crawling by search engines
  5. Reverse engineering, decompiling, disassembling, or otherwise analyzing the software, systems, or source code we provide
  6. Unauthorized access, system destruction, or other acts that interfere with the proper operation of the Site
  7. Spreading false information through the Site
  8. Any other act that we reasonably determine to be inappropriate

5. Disclaimers (Site)

5.1 Accuracy of information

We make no warranty, whether express or implied, as to the accuracy, completeness, usefulness, currency, or fitness for a particular purpose of the information posted on the Site.

5.2 Information about the App

We make no warranty or commitment as to the information about the App posted on the Site (including its features, timing of availability, pricing, geographic availability, and quality). Such information may be changed, added to, deleted, or withdrawn without notice.

5.3 User's damages

We bear no liability for any damage to the user arising from the use of, or inability to use, the Site, except where there is willful misconduct or gross negligence on our part.

5.4 Scope of liability for damages

Even where we bear liability for damages, our liability is limited to the ordinary damages actually incurred with respect to the fact directly causing such damage, and we bear no liability for indirect damages, special damages, lost profits, loss of data, or other consequential damages.

5.5 Third-party services

The Site may contain links to third-party websites or services, but we bear no liability for the content, availability, or safety of such third-party websites or services.

6. Changes, Suspension, and Termination of the Site

We may change, add to, or delete the content of the Site, or suspend or terminate the provision of the Site, without prior notice to the user. We bear no liability for any damage to the user arising therefrom.

Part 2 — Conditions for Using the App (End User License Agreement / EULA)

This Part 2 is the End User License Agreement (in this Part 2, the "Agreement") between the user and us regarding the use of the App. By installing or using the App, the user is deemed to have agreed to this Agreement.

7. Definitions

  1. "App" means the iOS application "DELT" that we make available on the App Store.
  2. "DELT Founder" means an optional registration (membership) for those who use DELT from an early stage, namely a user who has registered an account in the App via "Sign in with Apple."
  3. "DELT Pro" means the set of paid features that we may provide in the future.
  4. "DELT Founder Benefit" means the benefit set out in Section 10.

8. License

  1. We grant the user a non-transferable, non-exclusive license to use the App in accordance with this Agreement.
  2. This license is limited to using the App on Apple-branded products (such as an iPhone) that the user owns or controls, and is granted within the scope of the Usage Rules applicable to the App Store (including Family Sharing).
  3. The user must not reverse engineer, decompile, disassemble, or otherwise analyze the App (except to the extent permitted by applicable law).

9. Account (DELT Founder)

  1. Registering an account in the App is optional. The user can use the App's recording features without registering an account.
  2. Account registration is performed only via "Sign in with Apple." We retain only an anonymous identifier specific to the App issued by Apple and the date and time of registration; we do not obtain the user's name or email address.
  3. The user can delete the account at any time from within the App (Settings → Membership → Delete Account). Deleting the account does not affect training records.

10. DELT Founder Benefit

  1. To users who register as DELT Founder, we grant the benefit of using, free of charge, the DELT Pro features that we may provide in the future.
  2. This benefit is limited to the DELT Pro features.
  3. We will discontinue this benefit if we terminate the DELT service. This benefit is provided free of charge, and no refund will be made under any circumstances.
  4. For features that involve server costs (such as syncing across devices), a reasonable scope of use (fair use) premised on ordinary use by an individual applies. We do not guarantee "unlimited or perpetual" use.
  5. This benefit is associated with the user's Apple ID. Due to Apple's specifications, the benefit cannot be automatically transferred to a different Apple ID.

11. Handling of Data and Location of Data (Transparency Clause)

  1. The App's data (training records, settings, etc.) is stored on the user's device. Syncing across devices is an auxiliary means for the user's convenience and is not the sole storage location.
  2. Using the App's ".delt" file export/import feature, the user can back up and restore their own data in a form that does not depend on the Apple ID.
  3. Even if the user deletes their data in iCloud, the data on the device and the ".delt" file remain. Only automatic restoration to a new device becomes unavailable.
  4. For the rare cases arising from the technical limitations concerning this benefit or the account (Section 10, item 4), we will respond on an individual basis if the user contacts us at support@getdelt.com.

12. Prohibited Conduct (App)

The user must not engage in acts that violate laws, regulations, or public order and morals, in improper use of the App, or in acts that infringe the rights of us or any third party.

13. Disclaimers (App)

  1. The App is provided "as is." We make no warranty as to fitness for a particular purpose or otherwise.
  2. We bear no liability for any damage to the user arising from the use of, or inability to use, the App, except where there is willful misconduct or gross negligence on our part.
  3. Even where we bear liability, its scope is limited to the ordinary damages actually incurred, and we bear no liability for indirect damages, special damages, lost profits, loss of data, or the like.

14. Termination of the Agreement (App)

  1. The user may terminate this Agreement at any time by deleting the App.
  2. We may suspend the user's use of the App if the user breaches this Agreement.
  3. We may change, suspend, or terminate the provision of the App or its features at our business discretion.

15. Special Provisions Regarding Apple

This Section is established in accordance with Apple's requirements, given that the App is provided through the App Store. In the event of any conflict between this Section and the other provisions of Part 2, this Section prevails with respect to the App.

  1. Parties to this Agreement. This Agreement is concluded between the user and us only, and not with Apple. We, not Apple, are solely responsible for the App and its content.
  2. Scope of the License. The license granted to the user is, as set out in Section 8, a non-transferable license limited to using the App on Apple-branded products that the user owns or controls.
  3. Maintenance and Support. We are solely responsible for providing maintenance and support services with respect to the App, to the extent required by applicable law. Apple has no obligation whatsoever to furnish any maintenance and support services with respect to the App.
  4. Warranty. We are solely responsible for any warranty with respect to the App, to the extent set out in Section 13. In the event that the App fails to conform to any applicable warranty, the user may notify Apple, and Apple may refund the purchase price (if any; not applicable where the App is provided free of charge) of the App to the user. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the App, and any other claims, losses, liabilities, damages, costs, or expenses attributable to any failure to conform to any warranty will be our responsibility.
  5. Product Claims. We, not Apple, are responsible for addressing any claims of the user or any third party relating to the App (including, but not limited to, product liability claims, claims that the App fails to conform to any applicable legal or regulatory requirement, and claims arising under consumer protection, privacy, or other legislation).
  6. Intellectual Property Rights. In the event of any third-party claim that the App or the user's possession and use of the App infringes that third party's intellectual property rights, we, not Apple, will be solely responsible for the investigation, defense, settlement, and discharge of any such claim.
  7. Legal Compliance (export representation). The user represents and warrants that (i) the user is not located in a country that is subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a "terrorist supporting" country, and (ii) the user is not listed on any U.S. Government list of prohibited or restricted parties.
  8. Contact for complaints. Inquiries or complaints from the user regarding the App should be directed to: Hideki Mizuta (水田英樹) (sole proprietor) / support@getdelt.com / 2F Nishi-Shinjuku Mizuma Bldg, 3-3-13 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan.
  9. Third-party terms of agreement. The user must comply with applicable third-party terms of agreement (for example, the terms of service set by the user's wireless carrier) when using the App.
  10. Third-party beneficiary. The user acknowledges and agrees that Apple and Apple's subsidiaries are third-party beneficiaries of this Agreement, and that, upon the user's acceptance of this Agreement, Apple will have the right (and will be deemed to have accepted the right) to enforce this Agreement against the user as a third-party beneficiary.

Part 3 — Common Provisions

16. Handling of Personal Data

The handling of personal data and of cookies and similar technologies on the Site and in the App is governed by the separately established "Privacy Policy."

17. Changes to These Terms

We may change these Terms as necessary. The revised Terms take effect from the time they are posted on the Site. Continued use of the Site or the App is deemed to constitute agreement to the revised Terms.

18. Governing Law and Jurisdiction

18.1 Governing law

These Terms are governed by the laws of Japan.

18.2 Court of jurisdiction

Any dispute arising in connection with these Terms, the use of the Site, or the use of the App shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

19. Language

The Japanese version of these Terms is the original, and versions in languages other than Japanese (such as English and Korean) are provided for reference only. In the event of any discrepancy in content between the Japanese version and a version in another language, the Japanese version prevails. We make no warranty as to the accuracy, completeness, or timeliness of any translation, and we bear no liability for any damage arising from errors or inconsistencies in translation.

20. Severability

Even if any provision of these Terms or any part thereof is held to be invalid or unenforceable under laws or regulations, the remaining provisions of these Terms, and the remaining portion of any provision a part of which is held invalid or unenforceable, shall continue in full force and effect.

21. Contact

For questions regarding these Terms, please contact: