Download of InerziaSmartWallpaper 1.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Theming Tools, more precisely Wallpapers. We recommend checking the downloaded files with any free antivirus. This free Mac app was originally produced by InerziaSoft.
From the developer:
InerziaSmartWallpaper is an application that automatically changes your wallpaper every day, allowing you to choose between 8 different sources. You can select one of the available sources and get a quick preview. You can apply the previewed image as your wallpaper with just a click. The tool automatically updates your wallpaper when your Mac wakes up from sleep.
You may want to check out more software for Mac, such as Mousterpiece, Little Lot or Desktop Wallpaper Customizer, which might be related to InerziaSmartWallpaper.