Talking about features, LumaFusion supports up to 6 video and audio tracks for for photos, videos, audio, titles and graphics with an additional 6 audio tracks narration, music and sound effects. You also get a magnetic timeline which makes it really easy to manipulate clips once they are imported. There’s dozens of transitions and effects with the ability to layer effects. Finally, it also comes with dozens of royalty free music, sound effects, and more. If you really need a professional grade video editing app for your iPhone, you should definitely buy LumaFusion.
Of course, none of the extras matter if an app can't do the most basic editing tasks. At this point, however, all of the products included here do a good job of letting you join, trim, and split video clips. They also let you make use of special effects such as animated transitions, picture-in-picture (PiP), chroma-key (the technique that lets you place a subject against any background, often known as green screening), and filters that enhance colors or apply creative effects and distortions. With most of them you can add a multitude of timeline tracks that can accommodate video clips, effects, audio, and text overlays.
Particularly intensive is the process of rendering your finished product into a standard video file that will by playable on the target device of choice, be that an HDTV, a laptop, or a smartphone. Most of the software can take advantage of your computer's graphics processor to speed this up. Be sure to check the performance section in each review linked here to see how speedy or slow the application is. In rendering speed testing, CyberLink and Pinnacle have been my perennial champs.
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.