Privacy: launch email list and this website
Effective October 18, 2026
Scope
This notice covers visits to tabletennisaicoach.com (the "Site") and the launch email list. For data handled inside the Table Tennis AI Coach app, see the app's privacy policy.
Who we are
Sakakikaen Co., Ltd., 1747 Heda, Numazu, Shizuoka, Japan. Contact: contact@sakakikaen.com
What we collect when you sign up
- Your email address (required)
- Your role — player, parent, coach/school, other (optional)
- The language of the page you signed up on
- When you gave consent and which version of the consent text you agreed to
- A one-way hash derived from your IP address, used to stop abuse (we do not store the IP address itself)
Why
- To tell you when the app launches (one email on launch day)
- To send important app news relevant to the role you chose (for example, the team plan)
- To prevent duplicate and automated sign-ups
We do not sell your email or share it with third parties for advertising. Our legal basis is your consent, which you can withdraw at any time.
Service providers
- Cloudflare, Inc. — hosting this Site, storing sign-ups, and Cloudflare Turnstile bot checks
- Resend — sending email
Data may be processed outside your country, including in the United States.
How long we keep it
Sign-ups are deleted automatically 6 months after you sign up. If you unsubscribe, your address is deleted within 30 days.
Your choices
Use the unsubscribe link in any email. To access or delete your data, email contact@sakakikaen.com.
Analytics
We may use Google Analytics to understand how the Site is used. For visitors from the EEA, the UK and Switzerland, analytics cookies stay off unless you agree.
Children
Children under 13 may not sign up. If you are 13 to 17, please ask a parent or guardian before signing up.
Changes
If we change this notice, we will update this page and its effective date.