Feb. 17, 2023

Version 5.3.0 has been released.

Jan. 20, 2020

Version 5.0.0 has been released.

Apr. 1, 2018

Version 4.8.0 has been released.

May. 10, 2017

Updates the speech recognition and synthesis engines.

Apr. 18, 2016

Version 4.7.1 has been released.

Jul. 23, 2015

Version 4.7 has been released.

Jul. 28, 2014

Due to electrical equipment inspection, speech recognition and speech synthesis will be unavailable from Friday, August 1st thru Monday, August 4th. We apologize for any inconvenience.

Jun. 19, 2014

Version 4.3 has been released.

Jun. 19, 2014 English site is open.
KoeTra app

What is KoeTra…

Communication through writing is usual between those with normal hearing and those with hearing impairments if sign language cannot be commonly used. However, the hearing impaired may not get the information that they need because we often hesitate to communicate in writing that may take time or be burdensome.
"KoeTra" supports smooth communication by utilizing both speech recognition and speech synthesis technology.

App Store download pamphlet
Install via the App Store here Download the pamphlet here

Understanding "KoeTra" in 30 seconds

For those with time, the details about "KoeTra"