Privacy Policy

This policy explains how CHARA handles information.

Effective date: July 14, 2026

Eligibility

You must be at least 18 years old to use CHARA. CHARA is not directed to people under 18. If you provide information about another person, including a child in your care, you confirm that you are authorized to do so.

Information we process

When you request a name, CHARA processes the nationality, gender, age, height, weight, personality answers, and app language you provide. You do not need an account, real name, or email address to generate a name.

To operate and protect the service, we also process an app-generated installation identifier, request status, response status, processing time, model and generation settings, prompts, and AI responses. Service providers may also process technical information such as IP address, device or advertising identifiers, network information, and timestamps.

If you email us, we process your email address and the information in your message so we can respond.

How we use information

We use this information to generate Japanese names, display results, operate credits and rewarded ads, prevent abuse, diagnose errors, improve generation quality, respond to support requests, meet legal obligations, and protect the service.

AI name generation and consent

The profile information, personality answers, and app language you provide are sent through our Supabase-hosted service to Google Gemini. CHARA asks for your explicit consent before the first generation.

We retain the final prompt, Gemini's unprocessed response, model and generation settings, result status, error information, and processing time for up to 30 days to investigate quality and errors. The prompt may contain the profile and personality information used for generation.

How Google handles prompts and responses depends on whether the request uses a paid or unpaid Gemini API service.

• Paid services: Google states that prompts and responses are not used to improve its products. They may be retained for a limited period for abuse monitoring, security, legal, or regulatory purposes.
• Unpaid services: Google may use submitted content and generated responses to improve its products, and human reviewers may process them.

For users in the European Economic Area, Switzerland, or the United Kingdom, Google states that paid-service data terms apply to both paid and unpaid services.

For details, see the Gemini API Additional Terms and Google Privacy Policy.

Advertising and privacy choices

CHARA uses Google Mobile Ads to offer optional rewarded ads. Depending on your region and device settings, Google and its partners may process device and advertising identifiers, IP address, ad interactions, approximate location derived from IP address, and consent choices.

Where required, CHARA displays Google's consent form before requesting ads. If available in your region, you can reopen Ad Privacy Options from the app menu. For details, see How Google uses information from sites or apps that use its services.

Purchases

Credit purchases are processed by Apple through the App Store. We do not receive your payment card or bank account details. CHARA stores a credit balance and identifiers for processed App Store transactions on your device. Apple processes purchase and account information under the Apple Privacy Policy.

Information stored on your device

CHARA stores app preferences, AI consent status, advertising consent information managed by Google's SDK, an app-generated installation identifier, credit balance, and processed transaction identifiers on your device. The installation identifier is sent to our service for rate limiting and is stored there only as a one-way hash.

Service providers and international processing

We use Supabase for backend hosting and database services, Google Gemini for AI name generation, Google Mobile Ads for rewarded advertising and consent management, and Apple for distribution and in-app purchases. These providers may process information in countries other than where you live, subject to their terms, privacy policies, and safeguards.

Retention and security

Generation diagnostic logs are retained for up to 30 days. Hashed rate-limit records are retained for up to 8 days. Information stored on your device remains until it is removed by the app, the operating system, or deletion of the app. Support emails are retained only as long as reasonably necessary to respond, resolve disputes, and meet legal obligations.

We use reasonable technical and organizational measures to protect information, but no internet transmission or storage system can be guaranteed completely secure.

Your choices and requests

You may decline AI processing by not continuing past the consent screen. You may later select Revoke AI Consent in the app menu. Revocation applies to future transmissions and does not automatically delete information already processed or stored.

You may request access, correction, or deletion by emailing supporthubjp+chara@gmail.com. Because CHARA has no user accounts and stores only a hashed installation identifier for rate limiting, we may not be able to identify a specific record without enough information from you.

Changes and contact

We may update this policy when CHARA, our service providers, or applicable requirements change. The updated policy will be posted here with a revised effective date.

Email: supporthubjp+chara@gmail.com