90us is a service creation company.
We build HiKana, a Japanese conversation app where you learn by talking with Kana.
Product
HiKana
Learn Japanese by talking with Kana.
An app that turns conversation into learning.
Talk with Kana and build your Japanese listening and speaking skills at your own pace.
Company
- Company Name
- 90us, Inc.
- Founder
- Hayato Hoshikawa
- Location
- San Francisco, CA
- Incorporated
- January 29, 2026 (Delaware)
- Parent Company
- 90dS Inc. (Tokyo, Japan)
- Contact
- info@90us-inc.net