There are like 90k people, inactive people and bots on reddit.
There are currently 87 060, but most seem pretty inactive. It depends a lot on how you present your idea, how much attention it gets. It might get 1000 upvotes, but might also get only 5
It is very important to present idea so that it is very easily understandable, because there are a lot of posts, of which majority gets buried very fast behind other posts.
Ok, thank you for the advice
I just posted the trailer. You can see it in the first post of this discussion
I also posted it on reddit.
The tool is ready and can be tested here.