Terms of Use (license terms)

Last updated: July 16, 2026

Reference translation: This English text is a reference translation provided for convenience. The Japanese version is the authoritative, legally binding text. In the event of any discrepancy or difference in interpretation between this translation and the Japanese version, the Japanese version shall prevail. See Section 12 (Governing language).

These Terms set out the license conditions for the Windows tray reminder app “LastCall” (the “Software”) provided by Ryusudo (“we” or “us”). By installing or using the Software, you are deemed to have agreed to these Terms.

Summary: The Free edition may be used free of charge, whether by individuals or organizations. Using the paid (Enterprise) features requires a license key. The Software is provided as is, and we accept no liability to the extent permitted by law.

1Definitions

Software: LastCall itself and its related files and documentation.
Free edition: the range of features usable without a license key.
Paid edition (Enterprise): features such as Microsoft 365 integration that are unlocked by a valid license key.
License key: the credential issued by us or our sales provider to use the paid features.

2License grant

Subject to your compliance with these Terms, we grant you a non-exclusive, non-transferable right to use the Software.

Free edition: may be used free of charge, whether by individuals or organizations.
Paid edition: within the scope of a valid license key (the activation limit = number of PCs), you may use the Enterprise features. One activation is consumed per PC.

3Prohibited uses

In using the Software, you must not:

Modify, reverse-engineer, decompile, or disassemble the Software (except where expressly permitted by law).
Improperly copy, share, resell, or circumvent license keys, or use beyond the activation limit.
Redistribute, lend, or sublicense the Software or any part of it (except where we have separately permitted it).
Use the Software to violate laws, infringe third-party rights, or interfere with the operation of our services.

4Intellectual property

Copyright and other intellectual property rights in the Software and its logo and name belong to us or the rightful owners. Except for the rights expressly granted, these Terms transfer no rights to you.

5Paid license and payment

Payment, billing, and receipt issuance for the paid edition are handled by Lemon Squeezy, our Merchant of Record. Lemon Squeezy's terms and displayed conditions apply at purchase. Refunds follow the support policy and Lemon Squeezy's terms.

For contract-based provision to public agencies, large enterprises, and the like, the conditions of a separately concluded contract or memorandum take precedence over these Terms.

6Third-party services

License activation: when registering and verifying a paid-edition key, the license key and your PC's computer name are sent to api.lemonsqueezy.com (see the Privacy Policy).
Microsoft 365 integration: only when you explicitly enable it and sign in, the Software reads the necessary information through Microsoft's delegated authentication. Microsoft's terms of service and privacy statement apply to that processing.

7No warranty

The Software is provided as is. We do not warrant that the Software will fit your particular purpose, operate without interruption or error, or produce any particular result. The availability and specification changes of third-party services (Lemon Squeezy, Microsoft 365, etc.) are likewise outside the scope of any warranty.

8Limitation of liability

To the extent permitted by law, we accept no liability for any damages (including loss of data, lost profits, or business interruption) arising from your use or inability to use the Software. Even where we are liable under applicable law, our total liability shall be capped at the amount you paid us in relation to the matter concerned.

9Changes to these Terms

We may revise these Terms in response to feature additions, changes in law, and the like. For material changes, we will post a notice on this page and update the last-updated date. If you continue to use the Software after a revision, you are deemed to have agreed to the revised Terms.

10Governing law and jurisdiction

These Terms are governed by and construed in accordance with the laws of Japan. Any dispute arising between us and you regarding the Software or these Terms shall be subject to the exclusive jurisdiction of the Japanese court having jurisdiction over our location as the court of first instance.

11Contact

For inquiries about these Terms, please contact:

Ryusudo (developer of LastCall)
Email: lastcall-support@ryusudo.com

12Governing language

These Terms were originally prepared in Japanese. This English version is a reference translation provided for convenience only. If there is any discrepancy or difference in interpretation between the two, the Japanese version shall prevail and be the legally binding text.

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