Privacy Policy

Last updated: July 12, 2026

Reference translation: This English text is a reference translation provided for convenience. The Japanese version is the authoritative text. In the event of any discrepancy, the Japanese version shall prevail. See Section 8 (Governing language).

This policy explains the information handled by the Windows tray reminder app “LastCall” (the “App”). Developed and provided by Ryusudo.

Summary: The App performs no analytics, advertising, or behavioral tracking whatsoever. The Free edition sends none of your information off your device (settings and reminders are stored only on your PC). Only when you use “license activation” and “Microsoft 365 integration” in the paid edition does the limited communication below occur.

1Information stored only on your device

The App's settings, reminder content, display state, and the like are stored locally in the %APPDATA%\LastCall folder on your Windows PC. These are not sent externally. If you uninstall the App and delete that folder, this information is removed as well.

2License activation (paid edition only)

How your paid (Microsoft 365 integration) entitlement is verified depends on your purchase channel.

Microsoft Store one-time purchase: the license is checked via the Microsoft Store on your device (StoreContext). This check happens on-device, and no information about you is sent to Ryusudo (Microsoft's handling of your Microsoft account and purchase data follows Microsoft's policy).
Microsoft Marketplace license: the signed-in user's entitlement is checked via Microsoft Graph (graph.microsoft.com, usageRights). The recipient is Microsoft, and Microsoft's privacy statement applies.

These are used solely to confirm license validity and manage license/seat counts. This communication does not occur in the Free edition or the in-app trial.

3Microsoft 365 integration (paid edition, optional)

Only when you explicitly enable and sign in to the SharePoint board / Teams meeting / Outlook event notification features in the paid edition, the App reads the necessary information from Microsoft Graph (graph.microsoft.com) through Microsoft's delegated authentication (OAuth 2.0 / MSAL) and shows it as desktop notifications.

What is read is limited to the permissions you (or your tenant admin) consented to (e.g., Sites.Read.All / Calendars.Read / User.Read / Files.ReadWrite.AppFolder).
The retrieved board posts, events, and meeting information are used on your device to display notifications and are not sent to or stored by any third party such as a Ryusudo server.
Settings sync (OneDrive): When you are signed in, your reminders and display settings are saved to an app-private folder in your own OneDrive (Files.ReadWrite.AppFolder) and synced across your PCs. Only this app-private folder is accessed — your personal files and documents are never accessed. Settings data stays within your tenant (your OneDrive) and is not sent to or stored by any Ryusudo server.
Authentication tokens are cached only on your PC and can be invalidated by signing out.

This integration is not included in the Free edition. Authentication and data processing take place on Microsoft's services, and Microsoft's privacy statement applies.

4Information not collected / processing not performed

We do not perform analytics, usage statistics, or behavioral tracking.
We do not perform ad delivery or advertising tracking.
The App does not collect or sell your personal information.
The links (URLs) you set in reminders open in your default browser only when you click them. The App never opens them automatically.

5Storage location and retention

All of the above settings and caches are stored only on your Windows device (mainly under %APPDATA%\LastCall). Uninstalling the App and, if desired, deleting that folder erases the local data. Microsoft's (Store / Marketplace) handling of license records follows Microsoft's policy.

6Contact

For inquiries about this policy or the App, please contact:

Ryusudo (developer of LastCall)
Email: [email protected]

7Changes to this policy

This policy may be revised in response to feature additions or changes in law. For material changes, we will post a notice on this page and update the last-updated date.

8Governing language

This policy was 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.