KAETAO
Last updated: November 1, 2026
10HALF LLC ("we," "us," or "our") establishes this Privacy Policy regarding the handling of users' personal information and data in the iOS/Android app and Amazon Alexa skill "KAETAO" (collectively, the "Service").
The Service collects the following information:
| Type of Information | Details | Collection Method |
|---|---|---|
| Display Name | A nickname optionally set by the user | Entered within the app |
| Item Data | Names, exchange records, and exchange intervals of registered household items (towels, toothbrushes, sheets, etc.) | Entered within the app |
| Restore Code | A code used for account authentication and recovery (stored on both device and server) | Automatically generated on first app launch |
| Alexa Link Code | A temporary code used to link with the Alexa skill (valid for 10 minutes) | Generated through in-app action |
| App Usage Data | App opens and sessions, device and OS type, approximate region, app-instance ID, iOS IDFV, events such as adding or exchanging items, creating or joining a family group, viewing the purchase screen, and completing a purchase or starting a free trial, and Android in-app purchase product information and price | Collected automatically or logged by Firebase Analytics in the iOS and Android apps |
| Purchase History | Details of in-app purchases in the iOS app (product, purchase date, expiration date, price, currency, and similar) and a user identifier that links purchases to your account | Recorded through RevenueCat when you make or restore a purchase in the iOS app |
The Service does not collect contact information such as email addresses or phone numbers.
The collected information is used solely for the following purposes:
We do not use the collected information for any purposes other than those listed above.
We use the following external services for the purposes listed below:
| Provider | Purpose | Privacy Policy |
|---|---|---|
| Google Firebase | Data storage and authentication | Google Privacy Policy |
| Google Analytics for Firebase | Analysis of usage in the iOS and Android apps | Firebase Privacy and Security |
| Amazon Alexa | Voice control functionality | Amazon Privacy Notice |
| Apple (App Store) | Payment processing for in-app purchases (subscriptions and one-time purchases) in the iOS app | Apple Privacy Policy |
| RevenueCat | Managing in-app purchases in the iOS app (verifying and restoring purchases, and determining whether the Pro plan is active) | RevenueCat Privacy Policy |
| Google Play | Payment processing for in-app purchases in the Android app | Google Privacy Policy |
In-app purchases are processed by Apple on iOS and Google Play on Android. We do not obtain or store payment card details.
The iOS app uses RevenueCat, Inc. (United States) to manage purchases. Your account identifier (user ID), App Store purchase history (product, purchase date, expiration date, price, currency, and similar), app and OS version, device language and region settings, and IP address are sent to RevenueCat and processed in the United States. Payment details, the contents of your registered items, and your restore code are not sent.
For details of analytics in the apps and on our product pages, see Section 6.
Item data, restore codes, and user information stored with your account are retained while the account is active. Deleting your account in the app's settings starts deletion of this data from your personal account. If the process does not complete because of a network error or another issue, contact us using the details in Section 9. Shared data in a family group with other members, including identifiers of users who performed actions, may remain.
Firebase Analytics data is managed separately from account data and is not deleted immediately when you delete your account. Under our current Google Analytics settings, ordinary event data is retained for 2 months and user data, including key events, for 14 months. The user-data retention period resets with new activity. These retention settings do not apply to aggregate reports. For inquiries about deleting analytics data, contact us using the details in Section 9.
RevenueCat purchase history is retained separately from account data so that purchases can be verified and restored, and is not deleted immediately when you delete your account. To request its deletion, contact us using the details in Section 9.
Alexa link codes are automatically invalidated after expiration (10 minutes) or after use.
Data is protected by Firebase (Google) security features, and only authenticated users can access their own data. All data communications are encrypted via HTTPS.
In-app analytics: The iOS and Android apps use Firebase Analytics, provided by Google LLC. In addition to automatically measured app opens and usage duration, we log events such as adding or exchanging items, family-group activity, viewing the purchase screen, and completing a purchase or starting a free trial. Events may include the number of items exchanged, whether a family group is used, and the purchased product ID. On Android, in-app purchase product names and prices may also be collected automatically. Names of household items registered in the app, restore codes, names, and email addresses are not included in our custom analytics events.
Analytics uses an app-instance ID, device and OS information, and an approximate region. The iOS app does not use IDFA, but collects IDFV (an identifier shared among apps from the same developer). Collection of the Android advertising ID is disabled. In the iOS app, if either the device region setting or the country of your App Store account is in the European Economic Area (EEA), the United Kingdom, or Switzerland (including certain overseas territories and Crown Dependencies where equivalent data protection laws apply), or if either cannot be determined, the app asks for your consent on first launch (after a new install, or after updating to the version that includes this feature) and does not collect analytics data until you agree. In other regions, analytics is enabled by default. The App Store country is used only for this decision and is not stored or sent. This decision is made once at that time and does not change automatically if you later change the region setting or App Store country (if the App Store country cannot be retrieved, the app also asks for consent, and decides again on the next launch until you answer). In any region, you can change or stop this at any time with “Share Usage Analytics” in the app’s settings; when you decline or turn it off, the app-instance ID and any unsent analytics data on the device are deleted (IDFV is managed by the OS and is not deleted). In the Android app, from version 2.0.7, if any of the device language/region setting, the country of your Google Play account, or the SIM/network country is in the regions above, or if the language/region setting or the Google Play country cannot be determined, the app asks for your consent on first launch and does not collect analytics data until you agree. In other regions, analytics is enabled by default. This country information is used only for the decision and is not stored or sent. You can change or stop this at any time with “Analytics” in the app’s settings; when you decline or turn it off, the analytics data on the device is deleted. Earlier versions of the Android app do not provide a setting to choose or disable analytics collection. See Firebase Privacy and Security for more information about analytics data handling.
Product-page analytics: On the Service's product pages (https://10half.jp/kaetao.en.html and the Japanese version), we use Google Analytics 4, provided by Google LLC, to understand how the pages are used and to improve them. It is not used in the Alexa skill. The following explanation of cookies and consent applies to the product pages.
Google Analytics 4 uses cookies to collect information such as the pages viewed, time spent, referral source, device type, and approximate location. We do not collect directly identifying information such as your name or email address, but a cookie-based identifier (pseudonymous ID) and your IP address are processed by Google LLC in the United States. The information collected is handled in accordance with Google's Privacy Policy.
We may also use advertising identifiers associated with your Google account (Google signals) to understand aggregate statistics such as the age range, gender, and interests of our visitors. This is used for statistical purposes only, and we do not identify individual users. We do not serve or display advertising on this site.
Consent: If you access our pages from the European Economic Area (EEA), the United Kingdom, or Switzerland, we do not use these cookies or advertising identifiers until you agree. A consent banner is shown on your first visit, and they are used only if you select "Agree". For visits from other regions, they are enabled by default, as we have not determined consent to be required there.
Whether the banner appears is determined from your browser's time zone setting, so it may not appear for some visitors in the regions above. Cookies are still not used in that case, because the region is determined by Google from the request itself. If you would like to consent but no banner appeared, you can open it from "Cookie Settings" as described below.
Even when cookies are not used, information such as the page viewed, your IP address, and your browser type is still sent to Google without cookies. This transmission does not identify you persistently as an individual.
Your choice is stored in your browser's local storage under the key kt-consent. This is used only to avoid showing the banner again, and is never transmitted anywhere.
You can change your choice at any time: open the banner again from "Cookie Settings" in the footer of our product pages and select "Decline" (any Google Analytics cookies already stored are deleted when you do). You can also disable cookies or enable tracking protection in your browser settings. On desktop browsers, you can additionally use the Google Analytics Opt-out Browser Add-on (not available for mobile browsers).
The Service is not directed at children under the age of 13, and we do not intentionally collect their personal information.
This policy may be updated in response to changes in the Service or applicable laws. We will notify users within the app if significant changes are made. The latest policy is always available on this page.
For privacy-related inquiries, please contact us at:
10HALF LLC
Email: support@10half.jp