Lumanfusion for stock footage editing/exporting

Does anyone use Lumafusion for stock footage editing/editing? I am interested in this Apple APP and wondering how it works, especially the export (bitrate) settings. Many thanks!

I edited a short 13-minute film that was accepted into a film festival. Lumafusion handled the 4K video as well as audio, color correction, and export. I haven't used it in a long time but I recall you could export up to a 150mbps data rate for 4K.