YOU SAID:

This tool really isn't that fun, is it?

INTO JAPANESE

このツールには、楽しい、本当にないよね?

BACK INTO ENGLISH

This tool is not really fun, huh?

INTO JAPANESE

このツールは、本当に楽しいでしょ?

BACK INTO ENGLISH

This tool is really good fun, isn't it?

INTO JAPANESE

このツールは本当に楽しいですよね。

BACK INTO ENGLISH

It is this tool is really fun.

INTO JAPANESE

それは、このツールは本当に楽しいです。

BACK INTO ENGLISH

It is this tool is really fun.