I test each service's prominent features, but it's up to you to decide whether or not you need dial-in numbers, VoIP, or both options for your audio, and whether or not you need video calls in addition to screen sharing. Some services offer both teleconferencing with dial-in numbers (local or toll-free) and VoIP calling, while some offer just one or the other. A few offer international dial-in numbers. Adobe Connect doesn't offer teleconferencing at all but can be integrated with a number of other services. Most offer video calls via webcam, although a few don't.
KineMaster is one of the most powerful video editor apps available. You can do the basics like most of these other video editors can. However, this one includes multiple video, image and effect layers. Additionally, there are audio filters, chroma key (for your green screen fans out there), various video effects, transitions, and more. It's not as powerful as a full desktop editor. However, this gets much closer than most other competitors. We would recommend this for actual video production (at least for stuff like YouTube). You can use it for free in trial mode for a while. However, you'll need the $4.99 per month subscription to get everything forever.