Downloading i39 1.6 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this Mac application is Aperio Lux Team. 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. The software relates to Audio & Video Tools.
From the developer:
i39 is a simple and easy-to-use tool for creating ringtones and alert tones from any music on your Mac. With i39 you can easily create unique ringtones to personalize your iPhone.
You may want to check out more software for Mac, such as Norrkross Movie, Xmart Volume or ImTOO MP4 Converter, which might be similar to i39.