Privacy Policy

iPhone app こと技 (Kotowaza)　Effective October 30, 2026　Washitsu Inc.

Your progress

The proverbs you have learned, your review schedule, your streak and your settings are stored only on your iPhone. We do not send them to our servers. Deleting the app deletes this data.

Advertising

To keep the app free, we show ads through Google AdMob, a service of Google LLC. To show ads, information about your device and app usage and the advertising identifier may be sent to Google. The advertising identifier is used only if you choose "Allow" when asked about tracking. Every feature works even if you do not allow it.

See How Google uses information from sites or apps that use its services. Users in the EEA, the UK and Switzerland see a consent form for ads.

Notifications

The daily proverb notification is scheduled on your iPhone. We do not use a server for it. You can turn it off at any time in the app settings.

Children

The app is not directed at children under 13, and we do not knowingly collect personal information from them.

Contact

Washitsu Inc.　k.miyazawa@washitsu-lab.com

Changes

If we change this policy, we will post the new version on this page.