Locate the file in Finder and Right click -> Open or Double click it with the Left mouse button
If you get warning with the following text
“Iris” is an application downloaded from the internet. Are you sure you want to open it?
Installation window will now open. Click Move to Applications Folder to install Iris
Iris will now start and it will be installed in the Applications folder. You can find the Iris file here
Iris will also start automatically when your Mac starts. You know that Iris is running when this icons are visible
When you Left click the small tray icon context menu with different settings will open
And if you Left click the Settings button it will open the main Iris Settings
And from here you can customize your Iris.
If you want access to more options you can support the project and buy Iris Pro from here
Thank you very much for trying Iris,