CapCut

CapCut is a video editing app developed by ByteDance, the same company behind TikTok. 

As you might expect, it is highly focused on video design for TikTok and Instagram. 

It has become very popular due to its intuitive interface, wide range of features and advanced editing tools, and its free availability. 

The app allows users to edit videos easily and quickly, apply special effects, add subtitles, music, and text, and share their content across various social media platforms. 

Although it is designed for mobile devices, there is also a version available for computers.