Our video editor (app.clipchamp.com) is free to use with your own media files and when you export finished videos at 480p.
It also offers a number of paid features such as higher resolution exports, branding and collaboration options. For more details, please see the overview at https://clipchamp.com/en/pricing/.
Our mobile app for iOS is currently free to use. We are considering the introduction of a paid tier at a later stage.