Talking about the editing features, it sports a multi-track timeline which means you can add more than one video and audio tracks. You can add background music or record voice-over right there in the app itself. There’s a built-in asset store where you can both free and paid music, clip graphics, fonts, stickers, transitions, and more to enhance your video. Other features include auto audio ducking, speed control for time lapse, and keyframe animation among other things. This is a feature rich video editing app for iPhone and one of the best ones you can find on the App Store.
Signal Private Messenger is one of the most popular privacy chat apps. It features end-to-end encryption for all messages, voice calls, and video chats between two Signal users. It focuses a lot on individual chats. There are group chat features, but it's mostly for personal use. This is one of the biggest differences between it and rival privacy chat app Telegram. Video calls worked fine in our testing so we have no trouble recommending them. It's a neat way to get some encrypted chats as well. The app is also completely free and open source. You can't really go wrong with it, but there are better video chat apps if you need group video chats.