Bigasoft 3GP Converter 

3GP is a popular multimedia format that's compatible with multiple 3G mobile phones. Bigasoft 3GP Converter is an application that enables you to convert media files to the aforementioned format with just a few clicks while preserving the quality of the original clips.

You can import files of various formats, select individual output profiles, and even edit them if necessary. Bigasoft 3GP Converter helps you trim, crop, and watermark the input videos, attach subtitles to movies, and apply various visual effects to the clips. The integrated video player lets you preview the altered video before converting it to 3GP or other media format.

Hence, this application is much more than its name suggests. For instance, you can use it to convert a movie from your computer to a format that's compatible with iPhones.

In my testing, Bigasoft 3GP Converter worked perfectly. There wasn't any quality loss and the app didn't slow down my Mac while converting the input clips. What's more, it took a very small amount of time to convert the videos.

Hence, it's definitely worth buying Bigasoft 3GP Converter for your Mac.