The Japanese version of this page is the original. This English version is a reference translation.
1. Delete in the app
- Open the app and choose “Settings” from the menu (☰) at the top left.
- In the “Account” section, tap “Delete account”.
- Read the confirmation and tap “Delete”.
Deletion happens immediately and cannot be undone. If you have only used the basic calculator and no online account was ever created, the button is disabled because there is nothing on our server to delete.
2. Request without the app
If you cannot use the app, for example because the device was lost or broken, contact us through the contact form or at lusterpicture777@gmail.com with the subject “Account deletion request”. To confirm it is you, please write from the verified email address registered to the account, or follow the verification steps we send you. Do not send your recovery code. We delete the account within 30 days of confirming the request.
3. Data that is deleted
- Your account identifier, display name (nickname), and the sessions of every signed-in device
- The values used to match your verified email address and your recovery code
- Events you organized, including their participants, scores, and attendance
- Your name, scores, and attendance stored in events organized by others
- Purchase information on our server: monthly-plan purchase tokens, order identifiers, and the ad-free and monthly entitlements attached to your account
4. Data we keep, and for how long
- Sales records: 7 years. Sales and order records that we receive from Google Play or the App Store are kept to meet accounting and tax obligations. They are not linked to the deleted account.
- Technical logs for fraud prevention and security: up to 1 year. These are limited records such as request times and response statuses.
- Information contained in backups is erased as the backups are rotated.
- Support correspondence is kept for as long as needed to handle the request and prevent disputes.
Purchase history that Google or Apple holds in your account with them, and information handled by advertising providers, is governed by their own policies.
5. Before you delete
- The monthly plan is not cancelled automatically. Cancel it first under “Payments & subscriptions” in Google Play, or under Settings → Apple Account → Subscriptions on iPhone.
- Calculator history, settings, and local score history stored on your device are not deleted. Remove them in the app or uninstall the app if you no longer need them.
- If you use the online features again on the same device, a new account is created. Earlier events and entitlements are not carried over. If a monthly plan is still valid in the store, “Restore purchases” attaches it to the new account.
- The one-time Ad-Free purchase (bought in app version 1.2.0 or later) is not tied to an account, so it stays after you delete your account.
6. Delete only some data and keep your account
- Events: As the organizer, tap “Cancel event” on the event screen. All participants lose access to the event. Cancelled events and events past their end date are erased from our server, together with their participants, scores, and attendance.
- Your own scores and attendance: In an event you have joined, you can change your score and attendance or clear them.
- History on your device: Calculator and score history is stored only on your device and is never sent to our server. The paid version lets you delete individual entries in the app, and anyone can remove it by clearing the app’s data in the device settings or uninstalling the app.
- Your registered email address and any other data: Tell us which data you want deleted through the contact form or at lusterpicture777@gmail.com. We respond within 30 days of confirming it is you.
See the Privacy Policy for everything we handle.