Installation
Requirements
MR3 is implemented by Java language. In ver. 26.4.3, Liberica Standard JDK 25 is embedded, so there is no need to install a JRE.
We confirmed MR3 following environemnt.
Windows 11
macOS Tahoe 26.4
How to Install
Windows
Go to the MRCube page on the Microsoft Store and click the “View in Microsoft Store” button.
Click the “Install” button.
Run the shortcut created on your desktop.
macOS (dmg download)
Download and extract mrcube-26.4.3.dmg from the download page and copy MRCube.app to the ‘Applications’ folder.
Run MRCube.app.
When the message ‘“MRCube” is an application downloaded from the Internet. Are you sure you want to open it?’ appears, click the “Open” button.
macOS (Homebrew)
Install Homebrew.
Run
brew tap mr-3/tapandbrew install --cask mrcubein Terminal.app.Launch “MRCube.app” from your Applications directory.
When the message ‘“MRCube” is an application downloaded from the Internet. Are you sure you want to open it?’ appears, click the “Open” button.
How to Uninstall
Windows
Select the Apps menu from the Settings screen, select MRCube from the list of installed apps and uninstall it.
macOS
Delete MRCube.app from the applications folder.
Used libraries
MR3 uses the following libraries: