開かい発はつ中ちゅう

noun which may take the genitive case particle 'no'

under development; in development

Used for software, products, projects, or plans that are currently being developed and not yet finished.

• このアプリはまだ開かい発はつ中ちゅうです。

  This app is still under development.

• 開かい発はつ中ちゅうの新しん製せい品ひんについて話はなし合あった。

  We discussed the new product that is in development.