Latest Version 4.8.2 is released on April 9, 2024.
Release Notes


For Windows, download from below.
MuseScore 3 compliant.
JapoScore Version 4.8.3 for Windows (25992 ダウンロード)


For Mac OSX, download from below.
MuseScore 3 compliant.
JapoScore Version 4.8.3 for Mac (14060 ダウンロード)

For Mac OSX (macOS 10.13.6), download from below. JapoScoreV3.9.12 and later versions cannot run on macOS 10.13.6 (Sorry!)。

JapoScore Version 3.9.11 for Mac (for OS 10.13.6) (8777 ダウンロード)