Deleting your account and data

日本語

Last updated: August 26, 2026

Himawari Circuit (provided by Himawari Tech). This page explains how to request deletion of your account and the data that goes with it, and what is deleted.

If you have a paid plan

Deleting your account does not cancel your subscription. Cancel it separately in your App Store or Google Play subscription settings. After you cancel, you can keep using the plan until the end of the billing period.

How to request deletion

Option 1: from inside the app (recommended)

  1. Open the app.
  2. Tap [Account] in the tab bar at the bottom of the home screen.
  3. Scroll to the bottom of the [Account] tab and tap [Delete account].
  4. Tap [Delete] on the confirmation screen.
  5. Tap [Delete] once more on the final confirmation screen.

Your account and its data are deleted right then. This cannot be undone.

Option 2: if you cannot use the app (by email)

If you have already uninstalled the app, or cannot use it for any other reason, email us at the address below.

  • To: support@himawari-tech.jp
  • Subject: Account deletion request
  • Body: the email address registered in the app, so that we can confirm it is you

Once we receive your request and confirm your identity, we delete the account within 7 days. The same data is deleted as when you delete the account in the app.

What is deleted

The following is deleted immediately, and cannot be restored afterwards.

  • Account details (email address, user ID, sign-in credentials)
  • Profile details (display name, bio, profile photo and so on)
  • Sessions, lap times, GPS traces and G-force records
  • Tracks you created
  • Your vehicles, maintenance records, tire records and the photos that go with them
  • The wallpaper you set in the app, as far as we hold a copy of it
  • Push notification tokens
  • Drivers you blocked

The wallpaper stored on your own device is not deleted. You can keep using the app without an account after you delete yours.

If you are the only owner of a group, that group is deleted with your account. To keep the group, make another member an owner before you delete your account. Groups that have another owner are not deleted; only your membership is removed. If you are the only owner of a group, the app tells you so on the confirmation screen.

What is kept

The following is kept, either because other drivers' records depend on it or because we need it for support and statistics. In every case, the link to you is removed.

DataWhy it is keptLink to you
Group chat messagesSo that the other members' conversation stays intactThe sender is shown as a driver who left, and the link to the account is removed
Group photosSo that the group's own record stays intactWe never recorded who posted them in the first place
ReportsAs a record of how we handled inappropriate postsThe link to the account is removed for both the person reporting and the person reported. The text of the post, taken down when the report was filed, is kept
Support enquiriesAs a record of how we answeredYour name, email address and account ID are deleted
The fact that an account was deletedFor usage statisticsIt holds nothing that identifies you. Only the date is recorded, to the day
Plan changesFor usage statisticsThe link to the account is removed. The time of the change is kept
Push notification delivery resultsTo look into why a notification did not arriveThe token is deleted and no link to the account remains

Billing records

Billing records are held by whoever took the payment — Apple (App Store) or Google (Google Play). We never receive card numbers or other payment details.

We use RevenueCat, Inc. to keep track of subscription status (see “Outsourcing” in our Privacy Policy). Subscription status stays with them after you delete your account, but because we delete our account records, you cannot be identified from what they hold.

Contact us

If you have questions about deleting your data or how we handle it, get in touch.