Yes, both Promo.com and ScreenFlow offer a Free Trial.
Promo.com is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
ScreenFlow is designed for Medium Business and Small Business.
Pricing for Promo.com Starts at $99/Month when Billed Yearly whereas for ScreenFlow Starts at $129.
Some top alternatives to Promo.com includes MixerFactory, WeVideo, Wave.video, Vidyou, Create, FlexClip, Boosted, Vidds, VideoVerse and Abraia.
Some top alternatives to ScreenFlow includes Create, VideoStudio Pro, Camtasia, Loom, Snagit, Vmaker, RecordCast, Filmage Screen and iMovie.