Korean Sounds of Letter — Versions

v25.12.03iOS

Dec 3, 2025

+ Added AI based voice scoring
+ Fixed several minor bugs

v24.03.12iOS

Mar 11, 2024

+ Added AI based voice scoring
+ Fixed several minor bugs

v23.12.19iOS

Dec 17, 2023

+ Added AI based voice scoring
+ Fixed several minor bugs

v23.11.02iOS

Nov 1, 2023

+ Added AI based voice scoring
+ Fixed several minor bugs

v23.07.16iOS

Jul 16, 2023

+ Added AI based voice scoring
+ Fixed several minor bugs

v23.06.01iOS

Jun 1, 2023

+ Optimized and improved functions
+ Fixed several minor bugs

v22.11.26iOS

Nov 27, 2022

+ Some optimizations and improvements
+ Some bug fixes

v20.9.3iOS

Sep 1, 2020

+ Some optimizations and improvements
+ Some bug fixes

v17.11.18iOS

Nov 19, 2017

+ Compatible with iOS 11
+ Support for iPhone X
+ Fix minor bugs

v9.15iOS

Sep 14, 2016

▪ Support iOS 10
▪ Improve the performance
▪ Fix minor bugs

v6.03iOS

Jun 4, 2016

▪  Optimize user interface.
▪  Improve performance.

v4.18iOS

Apr 5, 2016

▪  Optimize user interface.
▪  Fix minor bugs.