Privacy Policy
Effective: November 4, 2026 / Last revised: November 6, 2026
This English version is a translation provided for reference only. The Japanese version is the official version, and it prevails if the two versions differ.
kusu (the "Operator") handles users' personal information in Kakeibo (the "Service"), a web budgeting service, as described below, in accordance with Japan's Act on the Protection of Personal Information and other laws and regulations.
1. Information we collect
- Account information: nickname, email address and password (stored in a form that cannot be converted back)
- Information we receive from Google if you log in with Google: name, email address and profile picture
- Budget data: accounts, categories and records of income and expenses (amounts, dates, notes and so on)
- Information recorded automatically when you use the Service: IP address, browser type (user agent), login times and access logs
- Information collected for access analytics: pages viewed (not including the part of the URL after "?", such as search conditions), referrers, page load speed, approximate region, and device and browser type
2. How we use information
- Providing the Service (logging in, and saving, totaling, displaying and downloading budget data)
- Account-related communication, such as confirming email addresses and resetting passwords
- Keeping the Service secure, such as preventing unauthorized logins and excessive access
- Understanding usage such as the number of visits, investigating failures, and improving the Service
- Responding to inquiries
We never use your budget data for advertising, or analyze or sell it without your consent.
3. Sharing with third parties
Except as required by law, the Operator does not provide personal information to third parties without the user's prior consent. Providing information to the processors in the next section is not considered providing it to third parties.
4. Processors and transfers outside Japan
To the extent necessary to provide the Service, the Operator entrusts the handling of personal information to the following companies.
- Cloudflare, Inc. (United States)Delivering the Service, storing data in its database, and analyzing access (Cloudflare Web Analytics)https://www.cloudflare.com/privacypolicy/
- Resend, Inc. (United States)Sending confirmation and password reset emails (we share your email address)https://resend.com/legal/privacy-policy
- Google LLC (United States)Logging in with a Google account (only if you log in with Google)https://policies.google.com/privacy
These companies are based in the United States, and data may be stored and processed on servers outside Japan. Information on the United States' system for protecting personal information is available on the website of Japan's Personal Information Protection Commission (in Japanese). The Operator has confirmed that each company takes measures to protect personal information under its terms of service and privacy policy.
5. Cookies
The Service uses cookies only to keep you logged in and to remember the language you choose. We do not use cookies for advertising. For access analytics we use Cloudflare Web Analytics, which does not use cookies or track individual users. If you disable cookies, you will not be able to log in.
6. Security
The Operator takes measures to prevent personal information from being leaked, lost or damaged, such as encrypting communication (HTTPS), storing passwords in a form that cannot be converted back, and limiting access to data.
7. Retention and deletion
- Personal information is kept for as long as your account exists.
- When you delete your account, your account information and budget data are deleted right away. However, they may remain in database backups kept for recovery from failures for up to 30 days after deletion.
- Access logs are kept for a certain period for security and failure investigation, and then deleted.
8. Requests for disclosure, correction, deletion and so on
You can check, correct and delete your registered information and budget data at any time on the Service, and download it as a CSV or Excel file. For other requests under the law, such as disclosure, correction, suspension of use or deletion of retained personal data, please contact us at the address below. We will respond in accordance with the law after confirming your identity.
9. Changes to this policy
The Operator may change this policy to reflect changes in laws or in the Service. We will announce important changes on the Service.
10. Contact
kusu / Email: kusu.kakeibo.support@gmail.com
The Operator's name and address will be disclosed without delay upon request.