Took the existing content from a product description for a run.
In about a min it came up with sentences that are more eye catching.

That means I can change my process of content creation, especially for writing up powerpoints.
I focus on writing up the boring facts, polish it up with nichesss, then add graphics.
Every slide becomes meaningful, contextual and visual - with little effort.

I have writesonic, but its low credit quota makes me very selective in what I run it with.
With nichesss, I just throw it in without thinking, and it is ok if nothing is useful since my cost to try is only 1 min. I haven't spent time to compare the quality of suggestions between the two, but I'd keep nichesss if I can keep only 1.

Right now the UI and UX is very basic and may look scary busy at the first glance, but it doesn't impact the effectiveness, nor does it cause too much friction learning how to use it - since its unlimited quota and it only takes 1 min to try and find out what a particular feature does for you.

Last but not least, it has a long list of supported languages that can be applied both during and after (translation) the content creation. This is really a no brainer review unlike other deals here that would take days or even weeks to experience and prove its value.