Terms of Service & Privacy Policy

1. Terms of Service

These Terms set out the conditions for using "VS.AI," a battle-style AI chat (the "Service"). In using the Service, users shall comply with the following rules.

• Fair play in battles: In debate battles against the AI, you must not engage in cheating (such as automated input using external tools, rapid repeated tapping of the screen, or entering large amounts of text by pasting).
• Content restrictions: Entering obscene, violent, or discriminatory statements, or content that defames or slanders others, is strictly prohibited.
• Profile pictures: You may not set a picture that infringes others' rights (such as copyright or portrait rights), or that is obscene, violent, or discriminatory, or that we otherwise judge to be inappropriate. We may remove such pictures without notice and restrict your ability to set a picture.
• Account restrictions: Each person may use only one account. If inappropriate conduct is confirmed, we will freeze the account and/or revoke badges earned.

1-1. Credits

• Nature of credits: Credits are an electronic right of use that can be used only within the Service, and they are not legal tender. Credits cannot be transferred to third parties, bought or sold, or exchanged for cash.
• Expiration: Purchased credits have no expiration date. However, if you delete your account (withdraw from the Service), any unused credits will be extinguished and cannot be restored.
• Refunds: As a general rule, we do not accept refunds of purchased credits. Requests for refunds are subject to the refund policy and procedures of the platform from which you made the purchase (the Google Play Store or the App Store). We cannot be involved in the platform's refund decisions.
• Handling upon termination of the Service: If we terminate the Service, we will announce it on this page and in the app at least 30 days before the scheduled termination date. After the announcement, we will stop new purchases of credits. How unused credits will be handled (including whether they will be refunded) will be announced together with the termination notice, in accordance with applicable laws and regulations.
• Handling upon account suspension: If you violate these Terms, we may suspend use of your account. In that case, we will not refund unused credits.

1-2. Conditions of Use

• Age: The Service is intended for persons aged 18 or older. Use by persons under 18 is not intended. Even in the unlikely event that a person under 18 purchases credits without the consent of a parent or guardian, we are unable to provide any remedy beyond the scope of the platform's refund policy.
• Changes to these Terms: We may revise these Terms in response to changes in laws and regulations or changes in the content of the Service. If we make important changes, we will announce the details of the changes and their effective date on this page and in the app in advance. If you use the Service on or after the effective date, you will be deemed to have agreed to the revised Terms.
• Governing law and jurisdiction: These Terms are governed by the laws of Japan. If any dispute arises between us and a user in connection with the Service, the Tokyo District Court shall have exclusive agreed jurisdiction as the court of first instance.
• Translation note: This English text is a translation provided for convenience. The Japanese version (privacy.html) is the official version; if there is any difference between them, the Japanese version prevails.

1-3. Disclosure under the Act on Specified Commercial Transactions

• Seller: Tenzo
• Person responsible for operations: Tenzo
• Address: Will be disclosed without delay upon request. Please send your request to the contact below.
• Phone number: Will be disclosed without delay upon request. Please send your request to the contact below.
• Contact: 2005dd28@gmail.com (For inquiries, please use the in-app support desk or this email address. We usually reply within 3 business days.)
• Selling price: The price shown on the purchase screen for each credit pack (including consumption tax). The price shown in the store prevails.
• Timing and method of payment: Payment is made upon completion of the purchase procedure, using the payment methods provided by the Google Play Store or the App Store.
• Timing of service delivery: Credits are normally granted within a few seconds after payment is completed. If they are not reflected, please contact the support desk.
• Returns and cancellations: Due to the nature of the product, returns and cancellations after purchase cannot be accepted. Refunds are subject to the refund policy of the platform from which you made the purchase.
• System requirements: A version of iOS / Android supported by the app (please check the store listing) and an internet connection are required.

2. Privacy Policy

We respect users' personal information and are committed to protecting it appropriately.

• Information collected: In the Service, we store and collect your Firebase UID for authentication, email address, user ID, display name (a nickname, shown to other users on the leaderboard), your profile picture (if you set one; shown to other users on the leaderboard), in-app purchase history and payment status, logs of the text you enter, battle scores, badge history, device identifiers for ad display and analytics (such as the advertising ID), crash and error information for investigating app problems (where the problem occurred, the device's OS type and version, and the app version), and interaction events for understanding how the app is used (see Firebase Analytics under "External transmission and cross-border transfer" below).
• Purposes of use: We use the data for scoring battles, detecting fraud, purchase processing and license management, serving ads, investigating and fixing problems, analyzing how features are used, improving the quality of the Service, and displaying the Elo rankings.
• External transmission and cross-border transfer: We send data to the businesses listed below. Because each of them stores data outside Japan, personal data is transferred outside Japan. The systems for protecting personal information in the destination countries may differ from those in Japan. We make these transfers after taking, with each business, the measures required under the Act on the Protection of Personal Information (such as ensuring continued handling by contract).
  • OpenAI, L.L.C. (USA): We send the text you enter, in order to generate responses in battles and to score them.
  • Anthropic, PBC (USA): Same as above.
  • Google LLC (USA): Same as above (Gemini API). In addition, for ad serving and measurement, we send and share the advertising ID (device identifier) with Google AdMob.
  • RevenueCat, Inc. (USA): For in-app purchase processing and license verification, we send purchase data (the product ID purchased, payment status, and user ID). The payment itself is processed by the payment system of the Google Play Store or the App Store.
  • Functional Software, Inc. d/b/a Sentry (USA): To investigate app problems, we send crash and error information. We do not send the text of debates or display names.
  • Google LLC / Firebase (data location: Japan, asia-northeast1; operated by a U.S. corporation): We store authentication information, account information, battle history, credit balances, and transaction history. If you set a profile picture, we also store that image. To automatically check that it is not inappropriate when you set it, we send the image to the Google Cloud Vision API. If you change or remove your profile picture, we keep the previous image for up to 30 days, not visible to other users, so that we can respond to reports of inappropriate images, and then delete it (if you delete your account, we delete it immediately).
  • Google LLC / Firebase Analytics (USA): To understand which features are used and how much, we send in-app interaction events (starting and completing the tutorial, starting and completing a battle, sharing a result, ad display, viewing the purchase screen, completing a purchase, viewing the season screen, and running out of credits) and accompanying information (the type of opponent AI, difficulty, win/loss, number of credits refunded, and balance range). We do not send the text of debates, display names, or email addresses. Credit balances are not sent as exact figures but rounded to a range (e.g., 15–34). In the browser demo (web version), we send these events only after you have agreed to these Terms and this Privacy Policy (the measurement script is not loaded before you agree). The browser demo uses cookies (such as Google Analytics' "_ga") to count usage from the same browser together, and, as part of how Google Analytics works, the type of browser and device, language, and approximate location (country and city level) are also collected. We do not send the URLs of battle pages. You can delete or block cookies in your browser settings. We do not perform measurement in the browser demo on devices set to a time zone in the European Economic Area (EEA), the United Kingdom, or Switzerland, or when your browser sends a "do not track" signal (Global Privacy Control / Do Not Track).
• Ad personalization and tracking: To show ads that match your interests, the Service may use advertising identifiers to link your usage across apps and websites owned by other companies (tracking).
  • iOS: On first launch, we ask for your permission to track. If you do not allow it, ads will be shown with non-personalized content. You can change this setting at any time in iOS Settings > Privacy & Security > Tracking.
  • Android: You can delete your advertising ID or disable ad personalization in your device's Settings > Google > Ads.
  • If you live in the European Economic Area (EEA) or a similar region, you can choose how ads are used in the consent form shown on first launch.
  • Even if you do not allow tracking, you can use all features of the Service without restriction.

3. Disclaimer

The AI's win/loss judgments and scoring results for debates provided in the Service are objective analyses based on the AI's evaluation algorithm and do not guarantee absolute correctness. We cannot accept liability for any damages arising from the AI's output.

4. Data Safety and Data Deletion Requests

In accordance with Google Play Store policies and security requirements, we set out below how data is handled and the procedure for users to delete their own data.

• Data encryption: All communication between the app and the servers is securely protected in transit by SSL/TLS encryption (HTTPS).
• Purposes of data collection: Your email address and user ID are collected as required information for account management and identity verification. In addition, device or other IDs (such as the advertising ID) are collected and shared for ad serving and analytics.
• How to delete your data (withdraw): You can delete your account (withdraw from the Service) directly from the settings in the app (account settings). Once withdrawal is carried out, your authentication account and all related battle logs, ranking scores, and profile data are permanently deleted from the Firebase database.
• Data deletion requests on the web (no email needed):
  If you have uninstalled the app, or if you wish to request deletion of your data directly on the web, please fill in the required information in the "Data Deletion Request Form" below and submit it. Based on identity verification and your request, we will promptly and permanently delete the related data from the database.
  Request data deletion (external form)
• Contacting the support desk: For any other questions or requests regarding data deletion, you may also contact the support desk directly (email: 2005dd28@gmail.com).