A: Hi bastienp2014
Yes, in part, to both.
The voices on Script Timer are terrific and lifelike. You will be happy you started - we improve them and they only get better - each week.

We have the screen sharing in BETA right now, which will be released along with a batch of new features like: Sound Effects, Music, Full Multi-voice Script creation, and long form voice creation.
As far as a powerpoint, you can do that already by getting one of our voices to speak the points and narrate the script. We are also going to release an editor, but, there are so many free versions that we havent felt the rush to create our own..Capcut, Veed, Canva, etc all have easy editors...Just save your PPTX as a movie, and you are ready to sync.