Contact

Last updated 2026-10-03

For purchases, downloads, bug reports or feature requests, please get in touch.

Email (preferred)

info@letsbjj.site
We reply within 48 hours.

Phone

+81-50-6870-5050
Weekdays 10:00–18:00 Japan time, in Japanese. We recommend email, so there's a record.

Company

KABUSHIKI GAISYA LETS BJJ (Hiromichi Fujiwara, Representative Director)

Address

Nishi-Shinjuku Mizuma Bldg 2F, 3-13 Nishi-Shinjuku 3-chome, Shinjuku-ku, Tokyo 160-0023, Japan

Before you write

• Downloads and payments are covered in Delivery, Cancellation & Refunds.
• For bug reports, please include your Mac model, macOS version, the app version (e.g. 1.0.1), and what you did and what happened. It helps us fix it faster.
• For questions about a purchase, please include the transaction ID on the receipt email from PayPal.