The 2.7.15 version of Irvue for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app was originally created by Leonspok. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. Irvue for Mac lies within Theming Tools, more precisely Wallpapers.
From the developer:
Irvue lets you keep your Mac screen looking fresh with Unsplash photos. You can set the application to change the wallpaper automatically every 3 hours, 12 hours, 24 hours, week, two weeks, or one month. You can select the same or different images on your displays.
You may want to check out more Mac applications, such as KonaBot, which might be related to Irvue.